{"product_id":"wearingeul-the-sign-of-four","title":"Wearingeul The Sign of Four Fountain Pen Ink — 5 mL Archive Bottle","description":"\u003cp\u003e\u003cem\u003eA mystery that reveals itself as the ink dries.\u003c\/em\u003e\u003c\/p\u003e\u003cp\u003eInspired by Arthur Conan Doyle’s \u003cem\u003eThe Sign of Four\u003c\/em\u003e, 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.\u003c\/p\u003e\u003cp\u003eFor 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.\u003c\/p\u003e\u003ch3\u003eFrom the Archivist’s desk\u003c\/h3\u003e\u003cp\u003eOur own swatch comparison shows how paper changes the effect: purple remains visible around the edges on the \u003ca href=\"\/products\/marks-edit-b7-grid-notebook-zipper-pocket-clear\"\u003eMARK’S EDiT B7 grid notebook\u003c\/a\u003e, 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.\u003c\/p\u003e\u003ch3\u003eInk character\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e purple\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSheen:\u003c\/strong\u003e green, most apparent in heavier applications on suitable paper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShimmer:\u003c\/strong\u003e blue and gold\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShading:\u003c\/strong\u003e visible variation depending on paper and application\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLiterary source:\u003c\/strong\u003e Arthur Conan Doyle, \u003cem\u003eThe Sign of Four\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e South Korea\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe Archive Bottle\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e5 mL of genuine Wearingeul fountain pen ink\u003c\/li\u003e\n\u003cli\u003eHigh-clarity clear borosilicate glass\u003c\/li\u003e\n\u003cli\u003eType I, Class A borosilicate 3.3\u003c\/li\u003e\n\u003cli\u003ePolypropylene screw cap with PTFE liner\u003c\/li\u003e\n\u003cli\u003eIncludes an individual ink swatch on Tomoe River 68 gsm paper\u003c\/li\u003e\n\u003cli\u003eRecyclable glass\u003c\/li\u003e\n\u003cli\u003eDesigned to be kept and reused\u003c\/li\u003e\n\u003cli\u003eHand-bottled and labeled by Boston Lore Studio\u003c\/li\u003e\n\u003cli\u003ePresented in a labeled glassine envelope\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eUsing a shimmer ink:\u003c\/strong\u003e 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.\u003c\/p\u003e\u003cp\u003eContinue the Sherlock Holmes shelf with \u003ca href=\"\/products\/wearingeul-the-valley-of-fear-fountain-pen-ink-30ml\"\u003eWearingeul The Valley of Fear\u003c\/a\u003e, another ink inspired by Arthur Conan Doyle.\u003c\/p\u003e\u003cp\u003eExplore more literary colors in \u003ca href=\"\/collections\/wearingeul-5ml-archive-bottles\"\u003eWearingeul 5 mL Archive Bottles\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003e\u003csmall\u003e\u003cstrong\u003eSwatch note:\u003c\/strong\u003e 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.\u003c\/small\u003e\u003c\/p\u003e","brand":"Boston Lore Studio","offers":[{"title":"Default Title","offer_id":50823674888417,"sku":"WEAR-SIGN-FOUR-5ML","price":8.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0842\/8486\/6785\/files\/wearingeul-the-sign-of-four-5ml-archive-bottle-1.heic?v=1791467171","url":"https:\/\/bostonlore.com\/products\/wearingeul-the-sign-of-four","provider":"Boston Lore Studio","version":"1.0","type":"link"}