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Wearingeul The Sign of Four Fountain Pen Ink — 5 mL Archive Bottle
$8.00
A mystery that reveals itself as the ink dries.
Inspired by Arthur Conan Doyle’s The Sign of Four, this purple ink holds four distinct elements: a violet base, green sheen, and separate blue and gold shimmer. In a generous swatch, the green gathers over the purple while small points of light remain visible beneath it, like clues that emerge only when the page is examined closely.
For handwritten stories, letters, and pages of observations, it brings the atmosphere of a Sherlock Holmes investigation to the writing desk. Its appearance changes with paper, ink flow, and the angle of the light.
From the Archivist’s desk
Our own swatch comparison shows how paper changes the effect: purple remains visible around the edges on the MARK’S EDiT B7 grid notebook, while the Col-o-ring card shows a darker green surface. The shimmer catches the light across both. The photograph in the gallery is our own swatch, made at Boston Lore Studio.
Ink character
- Color: purple
- Sheen: green, most apparent in heavier applications on suitable paper
- Shimmer: blue and gold
- Shading: visible variation depending on paper and application
- Literary source: Arthur Conan Doyle, The Sign of Four
- Origin: South Korea
The Archive Bottle
- 5 mL of genuine Wearingeul fountain pen ink
- High-clarity clear borosilicate glass
- Type I, Class A borosilicate 3.3
- Polypropylene screw cap with PTFE liner
- Includes an individual ink swatch on Tomoe River 68 gsm paper
- Recyclable glass
- Designed to be kept and reused
- Hand-bottled and labeled by Boston Lore Studio
- Presented in a labeled glassine envelope
Using a shimmer ink: Gently agitate the bottle before filling to redistribute the shimmer. A wider or wetter nib generally makes the shimmer more visible. Use a fountain pen suitable for shimmer inks and clean it regularly.
Continue the Sherlock Holmes shelf with Wearingeul The Valley of Fear, another ink inspired by Arthur Conan Doyle.
Explore more literary colors in Wearingeul 5 mL Archive Bottles.
Swatch note: The gallery includes Boston Lore Studio’s own swatches on an EDiT notebook and a Col-o-ring card, alongside an official Wearingeul stock swatch for reference. Ink appearance varies with lighting, paper, pen, nib size, ink flow, and display settings. This listing is for one Boston Lore Studio 5 mL Archive Bottle; the original 30 mL bottle and box shown in reference photographs are not included.