Diamine Aurora Borealis in a 30 mL plastic bottle. Diamine produced Aurora Borealis for the Reddit community /r/fountainpens - a great group of fountain pen enthusiasts (of which we are active as /u/LemurInk).
Produced in the UK since 1864, Diamine Ink offers a wide array of color choices and delivery systems, including various bottle sizes as well as cartridges for use in fountain pens.
Diamine Aurora Borealis is also available in an 80 mL glass bottle.