Diamond is a combination of roseian quartz, blue moonian quartz, jasperian, and milkian quartz from the quartz system. It is feminine, masculine, neutral, and xenine aligned, however it is not female aligned or male aligned. It may also be described as neutrois but locusian. It can be fluid through those four genders but it doesn't have to be.
The term was coined on the 22nd of November, 2020 by FANDOM user RoseWatera as a part of the quartz system. This page is the original source of the term and it has no external resources.
The flag was based of the great diamond authority from Steven Universe with a white diamond in the center to symbolize gemstones. It was made on the same day it was coined by FANDOM user RoseWatera.
The alternate flag was coined by FANDOM user Kudorix on the 13th of February, 2021. Blue means masculine alignment, hot pink means feminine alignment, yellow means xenine alignment and green means neutral alignment. The pastel colors (the blue and pink) mean having feminine and masculine alignment but not having it at the same time. Pastel purple and yellow colors mean still identifying as neutral/non-binary gender.