Diamine Chameleon Ink is a bold, 50ml bottled ink that features a unique color-shifting effect. Through a combination of heat, environment, and water-based chemistry, this ink changes color in various lighting. It is ideal for creating standout art and calligraphy pieces. The Diamine Green Edition Bottled Ink was originally released as part of their 2022 Inkvent Calendar of 25 inks. Contained in 50ml glass bottles this fountain pen ink is categorized under Chameleon category. Green Edition Chameleon inks include: Solar Storm. Spiced Apple, Upon a Star, Olive Swirl and Deck the Halls. A little about Diamine: Diamine is manufactured in England since 1864 and are water-based, acid-free, non-toxic as well as vegan-friendly.