Crystallian is a combined gender element from the element system. It is combination of the neutral element, tellusian (earth) and the xenine element, alterian (spirit), and is represented by the element of crystal. One whose gender element is a combination of neutral and xenine would be crystallian. The noun form of the word is crystali (ex: I am crystali).
History
Harenian was first known to be coined on January 14, 2018, along with the flag[1], but it was likely coined earlier than that on a Google spreadsheet[2].
Flag
The flag's colors are pastel purple, pink, and yellow- representing crystals- with a diamond in the center, representing two triangles together.