This is Amber.
She watched her love, Topaz, be executed right in front of her, the gem cut in half so she could never re-form. Amber collected the two halves and fit them into the eye sockets of the fossilized dinosaur skull that she wears.
The skull is not part of her physical projection. But with Topaz’s spirit protecting it, it is indestructible. If Amber ever loses her physical form, the skull lands atop Amber’s gem and cannot be moved until Amber is able to re-form.
Amber and Topaz were both born in the Earth Kindergarten. When Topaz was murdered in the war, Amber swore to destroy anyone who stood against Gem expansion.
Her gem is located on her inner left ankle, and her weapon is a blade.