{"title":"Fountain Pen Ink","description":"\u003cp style=\"text-align: center;\"\u003eFountain pen writing inks are manufactured at our Pennsylvania workshop.\u003c\/p\u003e","products":[{"product_id":"flint","title":"Flint","description":"\u003cp\u003eOur Flint fountain pen ink was formerly titled \"Gunpowder\", but has been renamed to avoid misclassification flags on search engines and social media. \u003c\/p\u003e\n\u003cp\u003eFlint is part of the Keystone Formula fountain pen ink line, our traditional dye-colorant ink. \u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eThe 90mL volume will provide approximately 112 standard converter refills assuming a 0.8mL draw. \u003c\/span\u003e\u003c\/p\u003e","brand":"Fountain Pen Ink","offers":[{"title":"90mL Glass Bottle","offer_id":47715369222386,"sku":"PN100497","price":25.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1237\/1088\/files\/Flint_Macro.jpg?v=1781193200"},{"product_id":"boiler-steam","title":"Boiler Steam","description":"\u003cp style=\"text-align: right;\"\u003eMove the iron horse.\u003c\/p\u003e\n\u003cp\u003eBoiler Steam is part of the Keystone Formula fountain pen ink line, our traditional dye-colorant ink. \u003cspan\u003eThe 50mL volume will provide approximately 62 standard converter refills assuming a 0.8mL draw.\u003c\/span\u003e\u003cspan\u003e Our ink swatch is produced with a cotton swab on Tomoe River paper.\u003c\/span\u003e\u003c\/p\u003e","brand":"Fountain Pen Ink","offers":[{"title":"50mL Glass Bottle","offer_id":47365916852466,"sku":"PN100533","price":17.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1237\/1088\/files\/Boiler_Steam_4eea0ace-f3f7-4e48-96b7-c7ce0af2436f.jpg?v=1750435394"},{"product_id":"tesla-coil","title":"Tesla Coil","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003eOne of our most popular inks, Tesla Coil is a rich cobalt blue color that will produce a iridescent magenta sheening effect when saturated on high-quality papers like Tomoe River and Rhodia. The pictured writing sample is made on 68 gsm Tomoe River paper with a cotton swab and medium nib. \u003cstrong\u003eThis colorant will produce a pure cobalt blue on sorbent papers.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cem\u003e*Fountain pen ink sheen properties are best expressed when the ink is saturated on slightly hydrophobic papers like Tomoe River or Rhodia. Get the best results with a wet line. \u003cmeta charset=\"utf-8\"\u003e \u003cstrong\u003eVisible coloring will vary drastically by paper type and saturation\u003c\/strong\u003e.\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eTesla Coil is part of the Keystone Formula fountain pen ink line, our traditional dye-colorant ink. \u003cspan\u003eThe 90mL volume will provide approximately 112 standard converter refills assuming a 0.8mL draw.\u003c\/span\u003e\u003cspan\u003e \u003cmeta charset=\"utf-8\"\u003eWe manufacture this ink in Pennsylvania with domestic and imported ingredients.\u003c\/span\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e","brand":"Fountain Pen Ink","offers":[{"title":"90mL Glass Bottle","offer_id":49287870611698,"sku":"PN100162","price":29.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1237\/1088\/files\/Tesla_Coil.jpg?v=1770136095"},{"product_id":"voltaic-arc","title":"Voltaic Arc","description":"\u003cp\u003e\u003cspan\u003eVoltaic is a vivid dark blue to blue-black that sparks with a rich merlot sheen in saturation for an alternating current of a finish.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003cem\u003e*Fountain pen ink sheen properties are best expressed when the ink is saturated on slightly hydrophobic papers like Tomoe River or Rhodia. Get the best results with a wet line. \u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003e\u003cspan style=\"text-decoration: underline;\"\u003eVisible coloring will vary drastically by paper type and saturation\u003c\/span\u003e.\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003ePart of the Keystone Formula fountain pen ink line, Voltaic Arc is built with \u003cmeta charset=\"utf-8\"\u003etraditional water-soluble dye colorants. Our ink color swatch is produced with a cotton swab on Tomoe River paper and writing sample with a German medium nib. \u003c\/span\u003e\u003cspan\u003eThe 50mL volume will provide approximately 62 standard converter refills assuming a 0.8mL draw. G\u003c\/span\u003elass bottles arrive prepared in our beautifully foiled Birmingham Pen Co. gift box.\u003c\/p\u003e","brand":"Fountain Pen Ink","offers":[{"title":"50mL Glass Bottle","offer_id":47365916721394,"sku":"PN100165","price":17.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1237\/1088\/files\/Voltaic_Arc_hiRes.jpg?v=1737127386"},{"product_id":"jade-inferno","title":"Jade Inferno","description":"\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eJade Inferno is a radiant teal that smolders with hints of merlot sheen* in saturation for a subtly molten finish.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003cem\u003e*While it's possible to find sheen in the Jade Inferno when saturated on slightly hydrophobic papers like Tomoe River or Rhodia, this property may require a wet pen and broad nib to achieve in writing. \u003c\/em\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cspan\u003ePart of the Keystone Formula fountain pen ink line, \u003cmeta charset=\"utf-8\"\u003eJade Inferno is built with traditional dye-colorants. \u003cmeta charset=\"utf-8\"\u003eOur ink color swatch is produced with a cotton swab on Tomoe River paper. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cspan\u003eThe 50mL volume will provide approximately 62 standard converter refills assuming a 0.8mL draw. G\u003c\/span\u003elass bottles arrive prepared in our beautifully foiled Birmingham Pen Co. gift box.\u003c\/p\u003e","brand":"Fountain Pen Ink","offers":[{"title":"50mL Glass Bottle","offer_id":47877227544818,"sku":"PN100168","price":17.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1237\/1088\/files\/Jade_Inferno_50.jpg?v=1756229680"},{"product_id":"dragonfly-twinkle","title":"Dragonfly Twinkle","description":"\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(231, 0, 0);\"\u003eSAVE\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003e on Dragonfly Twinkle\u003c\/strong\u003e in the \u003ca href=\"https:\/\/www.birminghampens.com\/products\/dragonfly-twinkle-pair\"\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(90, 49, 244);\"\u003eTwinkle Pair\u003c\/span\u003e\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"UTF-8\"\u003eInspired by the iridescent allure of a dragonfly wing, Dragonfly Twinkle layers intricate teal tones and glistening Twinkle pigment with subtle merlot accents when saturated on slightly hydrophobic fountain-pen-friendly papers.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eTwinkle Formula inks require additional pen maintenance and cleaning compared to their traditional ink peers. A medium point grade nib or larger is suggested to permit the pigment to travel from reservoir to page. We do not recommend pigmented inks in vintage pens. With all pigmented inks, we suggest using a pen that fully disassembles for complete and thorough cleaning.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eInk swatch and writing samples are produced with cotton swab and medium point grade nib on fountain-pen-friendly Tomoe River paper. Each 90mL volume will provide approximately 112 standard converter refills with an average 0.8mL draw. Rigid glass bottles arrive individually wrapped in cellulose wadding and prepared in a beautifully foiled gift box.\u003c\/span\u003e\u003c\/p\u003e","brand":"Fountain Pen Ink","offers":[{"title":"90mL Glass Bottle","offer_id":47899743060210,"sku":"PN100177","price":39.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1237\/1088\/files\/Dragonfly_Twinkle_Macro_Swatch.jpg?v=1757436134"},{"product_id":"pitted-nickel","title":"Pitted Nickel","description":"\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eGET ONE\u003cspan\u003e \u003c\/span\u003e\u003cspan style=\"color: rgb(231, 0, 0);\"\u003eFREE\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e bottle with Pitted Nickel in the \u003ca href=\"https:\/\/www.birminghampens.com\/products\/tigers-eye-bundle\" title=\"Tiger's Eye Ink Bundle\"\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(90, 49, 244);\"\u003eTiger's Eye Ink Bundle\u003c\/span\u003e\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003ePitted Nickel is part of the Keystone Formula fountain pen ink line, our traditional dye-colorant ink. \u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eThe 50mL volume will provide approximately 62 standard converter refills assuming a 0.8mL draw.\u003c\/span\u003e\u003cspan\u003e Our ink swatch is produced with a cotton swab on Tomoe River paper. \u003cmeta charset=\"utf-8\"\u003eWe manufacture this ink in Pennsylvania with domestic and imported ingredients.\u003c\/span\u003e\u003c\/p\u003e","brand":"Fountain Pen Ink","offers":[{"title":"50mL Glass Bottle","offer_id":48251178516722,"sku":"PN100194","price":17.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1237\/1088\/files\/Pitted_Nickel_b03fe87c-e176-43f4-8b00-b6cf8953776b.jpg?v=1763749217"},{"product_id":"ohio-river","title":"Ohio River","description":"\u003cp style=\"text-align: right;\"\u003e\u003cem\u003eOhio River starts at the point.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eOhio River is part of the Keystone Formula fountain pen ink line, our traditional dye-colorant ink. \u003cspan\u003eThe 50mL volume will provide approximately 62 standard converter refills assuming a 0.8mL draw.\u003c\/span\u003e\u003cspan\u003e Our ink swatch is produced with a cotton swab on Tomoe River paper. \u003cmeta charset=\"utf-8\"\u003eWe manufacture this ink in Pennsylvania with domestic and imported ingredients.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Fountain Pen Ink","offers":[{"title":"50mL Glass Bottle","offer_id":47365916557554,"sku":"PN100200","price":17.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1237\/1088\/files\/Ohio_River.jpg?v=1774542380"},{"product_id":"heron","title":"Heron","description":"\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eGET ONE\u003cspan\u003e \u003c\/span\u003e\u003cspan style=\"color: rgb(231, 0, 0);\"\u003eFREE\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e bottle with Heron in the \u003ca title=\"Tiger's Eye Ink Bundle\" href=\"https:\/\/www.birminghampens.com\/products\/tigers-eye-bundle\"\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(90, 49, 244);\"\u003eTiger's Eye Ink Bundle\u003c\/span\u003e\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eHeron is part of the Keystone Formula fountain pen ink line, our traditional dye-colorant ink. \u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eThe 50mL volume will provide approximately 62 standard converter refills assuming a 0.8mL draw.\u003c\/span\u003e\u003cspan\u003e Our ink swatch is produced with a cotton swab on Tomoe River paper. \u003cmeta charset=\"utf-8\"\u003eWe manufacture this ink in Pennsylvania with domestic and imported ingredients.\u003c\/span\u003e\u003c\/p\u003e","brand":"Fountain Pen Ink","offers":[{"title":"50mL Glass Bottle","offer_id":48251173175538,"sku":"PN100463","price":17.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1237\/1088\/files\/Heron_c1294517-0a8a-4383-a756-630d8acc94be.jpg?v=1763748859"},{"product_id":"bonsai","title":"Bonsai","description":"\u003cp\u003eBonsai is part of the Keystone Formula fountain pen ink line, our traditional dye-colorant ink. \u003cspan\u003eThe 50mL volume will provide approximately 62 standard converter refills assuming a 0.8mL draw.\u003c\/span\u003e\u003cspan\u003e Our ink swatch is produced with a cotton swab on Tomoe River paper. \u003c\/span\u003e\u003c\/p\u003e","brand":"Fountain Pen Ink","offers":[{"title":"50mL Glass Bottle","offer_id":47345099702514,"sku":"PN100875","price":17.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1237\/1088\/files\/Bonsai_0d3b2fb8-e4ce-49d0-b877-113ba3a76136.jpg?v=1744902744"},{"product_id":"aqueduct","title":"Aqueduct","description":"\u003cp style=\"text-align: center;\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eGET ONE\u003cspan\u003e \u003c\/span\u003e\u003cspan style=\"color: rgb(231, 0, 0);\"\u003eFREE\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e bottle with Aqueduct in the \u003ca href=\"https:\/\/www.birminghampens.com\/products\/firebox-ink-bundle\" title=\"Angelfish\"\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(90, 49, 244);\"\u003eFirebox Ink Bundle\u003c\/span\u003e\u003c\/strong\u003e\u003c\/a\u003e. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAqueduct is part of the Keystone Formula fountain pen ink line, our traditional dye-colorant ink. The 50mL volume will provide approximately 62 standard converter refills assuming a 0.8mL draw. \u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eWe manufacture this ink in Pennsylvania with domestic and imported ingredients.\u003c\/span\u003e\u003c\/p\u003e","brand":"Fountain Pen Ink","offers":[{"title":"50mL Glass Bottle","offer_id":47678538645746,"sku":"PN100690","price":17.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1237\/1088\/files\/Aqueduct_4f4e00bb-14d2-4455-b25b-c8c1e00b2704.jpg?v=1761769032"},{"product_id":"butchers-broom","title":"Butcher's Broom","description":"\u003cp\u003eButcher's Broom is part of the Keystone Formula fountain pen ink line, our traditional dye-colorant ink. \u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eThe 50mL volume will provide approximately 62 standard converter refills assuming a 0.8mL draw.\u003c\/span\u003e\u003cspan\u003e Our ink swatch is produced with a cotton swab on Tomoe River paper. \u003cmeta charset=\"utf-8\"\u003eWe manufacture this ink in Pennsylvania with domestic and imported ingredients.\u003c\/span\u003e\u003c\/p\u003e","brand":"Fountain Pen Ink","offers":[{"title":"50mL Glass Bottle","offer_id":47502449246450,"sku":"PN100691","price":17.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1237\/1088\/files\/Butchers_Broom_35c11ed7-ac6d-4478-875a-ab4a3126722d.jpg?v=1763148925"},{"product_id":"iron-ore","title":"Iron Ore","description":"\u003cp style=\"text-align: center;\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eGET ONE\u003cspan\u003e \u003c\/span\u003e\u003cspan style=\"color: rgb(231, 0, 0);\"\u003eFREE\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e bottle with Iron Ore in the \u003ca title=\"Angelfish\" href=\"https:\/\/www.birminghampens.com\/products\/firebox-ink-bundle\"\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(90, 49, 244);\"\u003eFirebox Ink Bundle\u003c\/span\u003e\u003c\/strong\u003e\u003c\/a\u003e. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIron Ore is part of the Keystone Formula fountain pen ink line, our traditional dye-colorant ink. \u003cspan\u003eThe 50mL volume will provide approximately 62 standard converter refills assuming a 0.8mL draw.\u003c\/span\u003e\u003cspan\u003e Our ink swatch is produced with a cotton swab on Tomoe River paper. \u003cmeta charset=\"utf-8\"\u003eWe manufacture this ink in Pennsylvania with domestic and imported ingredients.\u003c\/span\u003e\u003c\/p\u003e","brand":"Fountain Pen Ink","offers":[{"title":"50mL Glass Bottle","offer_id":47365913837810,"sku":"PN100874","price":17.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1237\/1088\/files\/Iron_Ore_25394a42-be87-4add-b4c7-f75734ed2a56.jpg?v=1763495330"},{"product_id":"interstellar-bronze","title":"Interstellar Bronze","description":"\u003cp\u003eBending spacetime and testing the limits of rich colorant saturation, Interstellar Bronze is a mesmerizing fusion of cosmic curiosity. This ultra-saturated hue shows a rich bronze-brown base that's overwhelmed with galactic fluorescent green sheen on slightly hydrophobic fountain-pen-friendly papers. Curiously purple-hued in the bottle, \u003cmeta charset=\"utf-8\"\u003eInterstellar Bronze is part of our traditional dye-colorant Keystone Formula writing ink series.\u003c\/p\u003e\n\u003cp\u003eSince this is an extremely saturated ink, some pens may operate on the dry side. Frequent pen cleaning is suggested and could require extra effort, but the dye colorants are entirely water-soluble. \u003cmeta charset=\"utf-8\"\u003eThis supersaturated hue performs best with broad point-grade nibs or thicker. \u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003ePhotographed color swatch was produced with cotton swab on Tomoe River paper. \u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cp\u003eFeatured writing ink is designed for a fountain pen paired with common quality writing papers. \u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eThe 90mL volume delivers approximately 112 standard converter refills with a 0.8mL draw.\u003c\/span\u003e\u003cspan\u003e We manufacture this product in Pennsylvania with domestic and imported ingredients.\u003c\/span\u003e\u003c\/p\u003e","brand":"Fountain Pen Ink","offers":[{"title":"90mL Glass Bottle","offer_id":47365908955378,"sku":"PN100707","price":29.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1237\/1088\/files\/Interstellar_Bronze.jpg?v=1774542325"},{"product_id":"extradimensional-umber","title":"Extradimensional Umber","description":"\u003cp\u003eAn ultra-saturated quasi-sheening sepia, Extradimensional Umber bends the color wheel. With a robust sepia base and a hint of green sheen at the right angle, stretching to sandy caramel on a speedier stroke, this hue will surely be one of the most mind-bending in your collection. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWARNING\u003c\/strong\u003e: Photographing the character in this ink is difficult. I've done my best to capture the extradimensional nuance, but you're bound to find something new as you play with stronger and weaker saturations on different papers in various lighting atmospheres. \u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eOur ink swatch is produced with a cotton swab on Tomoe River paper. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eSince this is an extremely saturated ink, some pens may operate on the dry side and extra effort may be required in cleaning. Extradimensional Umber is part of the Keystone Formula fountain pen ink line, built with water soluble dye-colorants. \u003cspan\u003eThe 90mL volume will provide approximately 112 standard converter refills assuming a 0.8mL draw.\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e","brand":"Fountain Pen Ink","offers":[{"title":"90mL Glass Bottle","offer_id":49288092975346,"sku":"PN100718","price":29.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1237\/1088\/files\/Extradimensional_Umber_Swatch.jpg?v=1779906590"},{"product_id":"mountain-thistle","title":"Mountain Thistle","description":"\u003cp\u003eMountain Thistle is a soft highland heather with complexity in saturation on fountain pen friendly papers. Color shifts from a soft lavender at dusk to a muted violet.\u003c\/p\u003e\n\u003cp\u003eMountain Thistle is part of the Keystone Formula fountain pen ink line, our traditional dye-colorant ink. The 50mL volume will provide approximately 60 standard converter refills assuming a 0.8mL draw. \u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eWe manufacture this ink in Pennsylvania with domestic and imported ingredients.\u003c\/span\u003e\u003c\/p\u003e","brand":"Fountain Pen Ink","offers":[{"title":"50mL Glass Bottle","offer_id":49110852894962,"sku":"PN100727","price":17.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1237\/1088\/files\/Mountain_Thistle_fbd4817b-e333-4c8a-af4c-1879662809e7.jpg?v=1774542350"},{"product_id":"byzantium","title":"Byzantium","description":"\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eGET ONE\u003cspan\u003e \u003c\/span\u003e\u003cspan style=\"color: rgb(231, 0, 0);\"\u003eFREE\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e bottle of Byzantium in the \u003ca href=\"https:\/\/www.birminghampens.com\/products\/tigers-eye-bundle\" title=\"Tiger's Eye Ink Bundle\"\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(90, 49, 244);\"\u003eTiger's Eye Ink Bundle\u003c\/span\u003e\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eByzantium is part of the Keystone Formula fountain pen ink line, our traditional dye-colorant ink. \u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eThe 50mL volume will provide approximately 62 standard converter refills assuming a 0.8mL draw.\u003c\/span\u003e\u003cspan\u003e Our ink swatch is produced with a cotton swab on Tomoe River paper. \u003cmeta charset=\"utf-8\"\u003eWe manufacture this ink in Pennsylvania with domestic and imported ingredients.\u003c\/span\u003e\u003c\/p\u003e","brand":"Fountain Pen Ink","offers":[{"title":"50mL Glass Bottle","offer_id":49288092745970,"sku":"PN100730","price":17.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1237\/1088\/files\/Byzantium.jpg?v=1763748990"},{"product_id":"saltmarsh","title":"Saltmarsh","description":"\u003cp\u003e\u003cspan data-sheets-userformat='{\"2\":33567427,\"3\":{\"1\":0},\"4\":{\"1\":2,\"2\":16777215},\"9\":1,\"10\":2,\"12\":0,\"15\":\"Roboto\",\"16\":12,\"28\":1}' data-sheets-value='{\"1\":2,\"2\":\"Saltmarsh\"}' data-sheets-root=\"1\"\u003eSaltmarsh is one unique hue! Depending on the type of light in proximity to the ink it can change from a marshy green all the way to a light coffee brown. In our experience the ink shifts to the coffee tone in daylight, and back to the green tone in most (\u003cem\u003ethough not all\u003c\/em\u003e) indoor lighting.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-sheets-userformat='{\"2\":33567427,\"3\":{\"1\":0},\"4\":{\"1\":2,\"2\":16777215},\"9\":1,\"10\":2,\"12\":0,\"15\":\"Roboto\",\"16\":12,\"28\":1}' data-sheets-value='{\"1\":2,\"2\":\"Saltmarsh\"}' data-sheets-root=\"1\"\u003eSaltmarsh\u003c\/span\u003e is part of the Keystone Formula fountain pen ink line, our traditional dye-colorant ink. \u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eThe 50mL volume will provide approximately 62 standard converter refills assuming a 0.8mL draw.\u003c\/span\u003e\u003cspan\u003e Our ink swatch is produced with a cotton swab on Tomoe River paper. \u003cmeta charset=\"utf-8\"\u003eWe manufacture this ink in Pennsylvania with domestic and imported ingredients.\u003c\/span\u003e\u003c\/p\u003e","brand":"Fountain Pen Ink","offers":[{"title":"50mL Glass Bottle","offer_id":47483452424434,"sku":"PN100741","price":17.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1237\/1088\/files\/Saltmarsh_25dfaf3a-ee95-4de0-860f-bfb45ed4719b.jpg?v=1774542409"},{"product_id":"sugar-kelp","title":"Sugar Kelp","description":"\u003cp\u003e\u003cspan data-sheets-root=\"1\" data-sheets-value='{\"1\":2,\"2\":\"Sugar Kelp\"}' data-sheets-userformat='{\"2\":33567427,\"3\":{\"1\":0},\"4\":{\"1\":2,\"2\":14743546},\"9\":1,\"10\":2,\"12\":0,\"15\":\"Roboto\",\"16\":12,\"28\":1}'\u003eDive deep with Sugar Kelp to discover a variety of nuanced organic complexities.  Varying by saturation and paper type, this hue can range from a lighter citron to a shaded olive. \u003cspan\u003eThe 50mL volume will provide approximately 62 standard converter refills assuming a 0.8mL draw.\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e Our ink swatch is produced with a cotton swab on Tomoe River paper. \u003cmeta charset=\"utf-8\"\u003eWe manufacture this ink in Pennsylvania with domestic and imported ingredients.\u003c\/span\u003e\u003c\/p\u003e","brand":"Fountain Pen Ink","offers":[{"title":"50mL Glass Bottle","offer_id":47860381581554,"sku":"PN100744","price":17.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1237\/1088\/files\/Sugar_Kelp_088ab16c-9e9b-4c76-8d7c-553131d7b01c.jpg?v=1774542434"},{"product_id":"megalodon","title":"Megalodon","description":"\u003cp\u003e\u003cstrong\u003eGET ONE\u003cspan\u003e \u003c\/span\u003e\u003cspan style=\"color: rgb(231, 0, 0);\"\u003eFREE\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e bottle with Megalodon in the \u003ca href=\"https:\/\/www.birminghampens.com\/products\/megalodon-ink-bundle\" title=\"Megalodon Ink Bundle\"\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(90, 49, 244);\"\u003eMegalodon Ink Bundle\u003c\/span\u003e\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eMegalodon is part of the Keystone Formula fountain pen ink line, our traditional dye-colorant ink. \u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eThe 50mL volume will provide approximately 62 standard converter refills assuming a 0.8mL draw.\u003c\/span\u003e\u003cspan\u003e Our ink swatch is produced with a cotton swab on Tomoe River paper.\u003c\/span\u003e\u003c\/p\u003e","brand":"Fountain Pen Ink","offers":[{"title":"50mL Glass Bottle","offer_id":48148373635314,"sku":"PN100803","price":17.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1237\/1088\/files\/Megalodon_0bf82709-459e-4e0d-99c8-872dad7410c0.jpg?v=1763152674"},{"product_id":"tigers-eye","title":"Tiger's Eye","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003e\u003cspan data-sheets-root=\"1\"\u003eTiger's Eye\u003c\/span\u003e is part of the Keystone Formula fountain pen ink line, our traditional dye-colorant ink. \u003cmeta charset=\"UTF-8\"\u003eThe 50mL volume will provide approximately 62 standard converter refills assuming a 0.8mL draw. Our ink swatch is produced with a cotton swab on Tomoe River paper. \u003cmeta charset=\"utf-8\"\u003eWe manufacture this ink in Pennsylvania with domestic and imported ingredients.\u003c\/span\u003e\u003c\/p\u003e","brand":"Fountain Pen Ink","offers":[{"title":"50mL Glass Bottle","offer_id":48251172487410,"sku":"PN100855","price":17.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1237\/1088\/files\/Tigers_Eye_a9698d2f-7c12-4290-93e2-c4927f4215eb.jpg?v=1763748688"},{"product_id":"moon-jellyfish","title":"Moon Jellyfish","description":"\u003cp\u003eMoon Jellyfish is part of the Keystone Formula fountain pen ink line, our traditional dye-colorant ink. This hue will produce a subtle sheening effect when saturated on high-quality papers like Tomoe River and Rhodia. Our color swatch was made with a cotton swab on 68 gsm Tomoe River paper. Color will pull toward a rich blue with more sorbent papers.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe 50mL volume will provide approximately 62 standard converter refills assuming a 0.8mL draw.\u003c\/span\u003e\u003c\/p\u003e","brand":"Fountain Pen Ink","offers":[{"title":"50mL Glass Bottle","offer_id":47373625950450,"sku":"PN100864","price":17.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1237\/1088\/files\/Moon_Jellyfish_a9354c74-836c-4df7-a8f8-37fb22a68233.jpg?v=1737732317"},{"product_id":"suncatcher","title":"Suncatcher","description":"\u003cp style=\"text-align: right;\"\u003eLight’s favorite souvenir.\u003c\/p\u003e\n\u003cp\u003eSuncatcher is part of the Keystone Formula fountain pen ink line, our traditional dye-colorant ink. \u003cspan\u003eThe 50mL volume will provide approximately 62 standard converter refills assuming a 0.8mL draw.\u003c\/span\u003e\u003cspan\u003e Our ink swatch is produced with a cotton swab on Tomoe River paper.\u003c\/span\u003e\u003c\/p\u003e","brand":"Fountain Pen Ink","offers":[{"title":"50mL Glass Bottle","offer_id":47443705528562,"sku":"PN100915","price":17.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1237\/1088\/files\/Suncatcher_6116b606-e495-4e16-bb85-622f3951d303.jpg?v=1774542458"},{"product_id":"maple-leaf-twinkle","title":"Maple Leaf Twinkle","description":"\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(231, 0, 0);\"\u003eSAVE\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003e on Maple Leaf Twinkle\u003c\/strong\u003e in the \u003ca href=\"https:\/\/www.birminghampens.com\/products\/dragonfly-twinkle-pair\"\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(90, 49, 244);\"\u003eTwinkle Pair\u003c\/span\u003e\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003eMaple Leaf Twinkle combines the fiery orange-red of peak fall with a frosted silver sparkle for like dew drops on fading leaves.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eTwinkle Formula inks require additional pen maintenance and cleaning compared to their traditional ink peers. A medium point grade nib or larger is suggested to permit the pigment to travel from reservoir to page. We do not recommend pigmented inks in vintage pens. With all pigmented inks, we suggest using a pen that fully disassembles for complete and thorough cleaning.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eEach 90mL volume will provide approximately 112 standard converter refills with an average 0.8mL draw. Rigid glass bottles arrive individually wrapped in cellulose wadding and prepared in a beautifully foiled gift box.\u003c\/span\u003e\u003c\/p\u003e","brand":"Fountain Pen Ink","offers":[{"title":"90mL Glass Bottle","offer_id":47848093221106,"sku":"PN100944","price":39.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1237\/1088\/files\/Maple_Leaf_Twinkle_Swatch_Macro_45bfcfc2-0beb-49d0-89a8-6278a5fb0869.jpg?v=1755283011"},{"product_id":"toponium-twinkle","title":"Toponium Twinkle","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(231, 0, 0);\"\u003eSAVE\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003cstrong\u003e on Toponium Twinkle\u003c\/strong\u003e in the \u003ca href=\"https:\/\/www.birminghampens.com\/products\/twinkle-pair\" title=\"Twinkle Pair\"\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(90, 49, 244);\"\u003eTwinkle Pair\u003c\/span\u003e\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eNamed after a theoretical particle born from top quark collisions, Toponium Twinkle radiates with a complex teal base and \u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eiridescent magenta* accents when saturated on fountain-pen-friendly papers, irradiated in a coating of golden pigment sparkle. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cem\u003e*Find sheen in the Toponium Twinkle when saturated on common fountain-pen-friendly papers like Tomoe River or Rhodia. This property may require a wet pen and broad nib to achieve in writing. Our writing samples and swatch were made on Tomoe River paper with a medium point grade nib and cotton swab.\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eTwinkle Formula inks require additional pen maintenance and cleaning compared to their traditional ink peers. A medium point grade nib or larger is suggested to permit the pigment to travel from reservoir to page. We do not recommend pigmented inks in vintage pens. With all pigmented inks, we suggest using a pen that fully disassembles for complete and thorough cleaning.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eEach 90mL volume will provide over 110 standard converter refills with an average 0.8mL draw. Rigid glass bottles arrive individually wrapped in cellulose wadding and prepared in a beautifully foiled gift box. \u003cmeta charset=\"utf-8\"\u003eWe manufacture this ink in Pennsylvania with domestic and imported ingredients.\u003c\/span\u003e\u003c\/p\u003e","brand":"Fountain Pen Ink","offers":[{"title":"90mL Glass Bottle","offer_id":47979998970098,"sku":"PN100970","price":39.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1237\/1088\/files\/Toponium_Swatch_Macro.jpg?v=1769018834"},{"product_id":"glasswing-butterfly-twinkle","title":"Glasswing Butterfly Twinkle","description":"\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cstrong\u003e\u003cspan style=\"color: rgb(231, 0, 0);\"\u003eSAVE\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003e on Glasswing Butterly Twinkle\u003c\/strong\u003e in the \u003ca title=\"Twinkle Pair\" href=\"https:\/\/www.birminghampens.com\/products\/twinkle-pair\"\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(90, 49, 244);\"\u003eTwinkle Pair\u003c\/span\u003e\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eGlasswing Butterfly Twinkle features a vivid sapphire base accented with iridescent magenta sheen* when saturated on fountain-pen-friendly papers. This hue is finished with a pearlescent golden Twinkle pigment, offering a remarkable range of visual variation—from light and medium sapphire tones with golden twinkle at lean saturations, to deep sapphire with intermittent merlot sheen and golden sparkle at rich saturations.*\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003e\u003cem\u003e*Find sheen in the \u003cmeta charset=\"utf-8\"\u003eGlasswing Butterfly when saturated on common fountain-pen-friendly papers like Tomoe River or Rhodia. This property may require a wet pen and broad nib to achieve in writing. Our writing samples and swatch were made on Tomoe River paper with a medium point grade nib and cotton swab.\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eTwinkle Formula inks require additional pen maintenance and cleaning compared to their traditional ink peers. A medium point grade nib or larger is suggested to permit the pigment to travel from reservoir to page. We do not recommend pigmented inks in vintage pens. With all pigmented inks, we suggest using a pen that fully disassembles for complete and thorough cleaning.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eEach 90mL volume will provide over 110 standard converter refills with an average 0.8mL draw. Rigid glass bottles arrive individually wrapped in cellulose wadding and prepared in a beautifully foiled gift box. \u003cmeta charset=\"utf-8\"\u003eWe manufacture this ink in Pennsylvania with domestic and imported ingredients.\u003c\/span\u003e\u003c\/p\u003e","brand":"Fountain Pen Ink","offers":[{"title":"90mL Glass Bottle","offer_id":47980004606194,"sku":"PN100971","price":39.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1237\/1088\/files\/Glasswing_Butterfly_Swatch_Macro.jpg?v=1769018858"},{"product_id":"lava-rock-twinkle","title":"Lava Rock Twinkle","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(231, 0, 0);\"\u003eSAVE\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003cstrong\u003e on Lava Rock Twinkle\u003c\/strong\u003e in the \u003ca href=\"https:\/\/www.birminghampens.com\/products\/gold-vein-lava-rock-twinkle-pair\" title=\"Twinkle Pair\"\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(90, 49, 244);\"\u003eTwinkle Pair\u003c\/span\u003e\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eNamed for the igneous rock formed from rapidly cooled magma, \u003c\/span\u003eLava Rock Twinkle\u003cspan\u003e flows across the page with a basaltic red that shifts to a shadowy iron ore in saturation on fountain pen friendly paper. Lava Rock is enriched by a finely dispersed golden shimmer shown like mineral crystallization along cooling fractures.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eTwinkle Formula inks require additional pen maintenance and cleaning compared to their traditional ink peers. A medium point grade nib or larger is suggested to permit the pigment to travel from reservoir to page. We do not recommend pigmented inks in vintage pens. With all pigmented inks, we suggest using a pen that fully disassembles for complete and thorough cleaning.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eEach 90mL volume will provide over 110 standard converter refills with an average 0.8mL draw. Rigid glass bottles arrive individually wrapped in cellulose wadding and prepared in a beautifully foiled gift box. \u003cmeta charset=\"utf-8\"\u003eWe manufacture this ink in Pennsylvania with domestic and imported ingredients.\u003c\/span\u003e\u003c\/p\u003e","brand":"Fountain Pen Ink","offers":[{"title":"90mL Glass Bottle","offer_id":48033665482994,"sku":"PN100983","price":39.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1237\/1088\/files\/Lava_Rock_Twinkle_Macro_Swatch.jpg?v=1769018811"},{"product_id":"gold-vein-twinkle","title":"Gold Vein Twinkle","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(231, 0, 0);\"\u003eSAVE\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003cstrong\u003e on Gold Vein Twinkle\u003c\/strong\u003e in the \u003ca title=\"Twinkle Pair\" href=\"https:\/\/www.birminghampens.com\/products\/gold-vein-lava-rock-twinkle-pair\"\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(90, 49, 244);\"\u003eTwinkle Pair\u003c\/span\u003e\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"UTF-8\"\u003eEmerging from a dark host matrix, Gold Vein Twinkle reveals a nearly black-umber base threaded with a golden sparkle, evoking gold precipitated along fractures in metamorphic rock.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eTwinkle Formula inks require additional pen maintenance and cleaning compared to their traditional ink peers. A medium point grade nib or larger is suggested to permit the pigment to travel from reservoir to page. We do not recommend pigmented inks in vintage pens. With all pigmented inks, we suggest using a pen that fully disassembles for complete and thorough cleaning.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eEach 90mL volume will provide over 110 standard converter refills with an average 0.8mL draw. Rigid glass bottles arrive individually wrapped in cellulose wadding and prepared in a beautifully foiled gift box. \u003cmeta charset=\"utf-8\"\u003eWe manufacture this ink in Pennsylvania with domestic and imported ingredients.\u003c\/span\u003e\u003c\/p\u003e","brand":"Fountain Pen Ink","offers":[{"title":"90mL Glass Bottle","offer_id":48033665581298,"sku":"PN100982","price":39.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1237\/1088\/files\/Gold_Vein_Twinkle_Macro_Swatch.jpg?v=1769018789"}],"url":"https:\/\/www.birminghampens.com\/collections\/fountain-pen-ink.oembed?page=4","provider":"Birmingham Pen Company","version":"1.0","type":"link"}