Shumibun Writing Time Jasper Green is a Sailor store exclusive ink from Shumibun in Japan. The store itself is makes a Fountain Pen magazine for the Fountain Pen market. The store describes the colour as a "deep green mixed with jasper". There are two other inks in the series (from which I only have a bottle of Jasper Green): Coral Blue (a dusty turquoise colour) and Lapis Blue (a rich blue).