Since 1864, the Diamine Ink Co. have upheld their reputation for producing the finest quality of fountain pen inks, calligraphy inks, drawing inks, and writing inks. Imported from the UK we are proud to offer the full line of of colors, including this Earl Grey, which was selected by the /r/fountainpens reddit online community. 30mL plastic bottle. Made in the United Kingdom. Diamine’s ink is high quality and suitable for all types of fountain pens.