Agate Bloom
From BelegarthWiki
Agate Bloom is a gemstone elemental. After eons of watching wars come and go on the surface, he finally decided to enter the realm of Stygia himself, his soul inhabiting the furnace of a blacksmith and turning it into a geode, but soon stepping into his humanoid form. His body is hollow like a geode, who's interior can be any color that the mineral agate forms in. This can reflect his mood, but it often stays within the spectrum of magenta and purple hues.
Though his essence and physiology is androgynous, he will more easily refer to himself as a masculine entity. A beloved past-time of his is to mimic weapons he'd observed through the ages, fashioning them out of rocks and enormous quartz deposits.