History for Diamine Inkvent 2021 Black Ivy

"Black Ivy" was first released in the Inkvent 2021 calendar, in a 12 ml plastic bottle. To purchase it stand-alone, a fancy four-footed glass bottle of 50 ml exists.
The ink is dark green leaning toward blue, or petrol teal, with a good amount of red sheen and, if used on paper that's not conducive to sheen, shading is also apparent. On some papers, it may smear after being written with a wet pen; other than that it is well behaved.