History for Diamine Inkvent 2019 Solstice

Solstice originally came in a plastic, square 12 ml bottle in the first Diamine Inkvent calendar, 2019. It has since been released as the four-pronged glass, round 7 ml bottle in the first Diamine Inkvent calendar, 2019. It has since been released as the four-pronged glass bottle that contains 50 ml.
It is a black ink with good amounts of green shimmer, and some black sheen that can make letters and lines look crisp. The ink leans warmer, to brownish or purpleish, if diluted.