Fountain Pen Ink

Jupiter Vortex Twinkle


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Regular price
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Free shipping on orders over $75*

Handmade in Pennsylvania

Dive into the cosmic allure of Jupiter Vortex Twinkle, a supersaturated part of our Twinkle Formula fountain pen line. This ink transcends the ordinary with its rich, bronze-brown base, energized by a fluorescent green sheen and Twinkle pigment accents. Unique in its composition, the ink appears curiously purple-hued in the bottle, adding a touch of mystery to your collection.

Jupiter Vortex Twinkle is a shimmering spectacle jam-packed with dyes and pigment. A broad nib point grade or larger is recommended to carry the thick viscosity. This supersaturated hue offers approximately 125 standard converter refills from its generous 100mL volume.

Our swatch was produced on 68gsm Tomoe River paper, which emphasizes the secondary colors specifically. It's challenging to display the color array of sheening inks on-screen.

Visible coloring will vary drastically by paper type and saturation.

Twinkle inks require additional pen maintenance and cleaning compared to their traditional ink peers. Please don't use Twinkle inks in vintage pens or pens that cannot be disassembled for cleaning. 

Handcrafted Inks, Right From The Source

Unparalleled Versatility

Our fountain pen inks are crafted to blend seamlessly with the others, offering you the possibility of creating an essentially limitless array of custom hues. Enjoy this color in the original chroma glory, or split it up and easily mix your own custom colors for pennies on the dollar.

We deliver not just a phenomenal volume-to-price, but also unmatched color-versatility-to-price in every bottle.

Exceptional Value

Skip the middleman and get your best value by purchasing directly from a maker. Other fountain pen inks made in North America can retail for up to 600% more* per unit of volume.

*Data last verified June 2023.

Straight From The Maker

As a tiny Pennsylvania based manufacturer with only two full-time employees, we're here to stand behind your purchase with expert guidance and support, directly from the makers.

Jupiter Vortex Twinkle


Free shipping on orders over $75.*
$9 for all other orders.

Our target is to deliver all standard domestic orders within 7-12 days from the order date, which includes both preparation and shipping transit time.

*Free shipping offers apply to orders shipped within the USA, excluding Alaska, Hawaii, and outlying territories. See our shipping policy for more details.

Formula Guide

We've compartmentalized our fountain pen ink recipes into four principal categories characterized by differentiating elements of the colorant component in the formula. A colorant is a dye or pigment that exhibits color. An ink vehicle is a series of chemicals used to transport colorant from storage reservoir to substrate (paper in our case). 

Keystone Formula inks are engineered using water-soluble dyes to produce a broad spectrum of colors with a variety of unique and desirable writing properties. Fitting the bill for a traditional fountain pen ink, this series by far the most popular. 

Delicate Formula inks are constructed with dyes selected for both performance and washability. Colors in this series will clean easily from most fabrics and surfaces with soap and water.

Everlasting Formula inks are compounded with pigmented colorants to produce highly water resistant and archival properties on paper.

Twinkle Formula inks are formulated using hybrid dye and pigment combinations to create a unique twinkling luster. 

Sample Recipe

Proxy Recipe (close match)

+ 1 part Interstellar Bronze

+ Twinkle Sprinkle to taste

Fountain pen ink on sale
Fountain Pen Packaging


Ink ingredients are meticulously combined and refined over roughly two dozen steps with a minimum of three thorough mixing steps per color to ensure quality & consistency within every batch.

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With only two full-time employees, every product is thoughtfully prepared at our Pennsylvania workshop just north of Pittsburgh.