Opalic

Opalic is a gender that is related to opals in some way. The relationship can be aesthetic, or structural; being internally faceted with a smooth exterior, hydrated, and rather fragile. It can also be spiritual, or another relation.

History & Flag
Opalian was coined on May 10, 2018 by tumblr user primalserenity, who created the flag on the same day.

Resources
http://archive.is/bmAlr