Obsidian

Name: Obsidian
Gem Fusions contain two or more combined "Gems". Their features are determined by traits found in the Gems forming the Fusion. In the case of Obsidian, she is dominantly black thanks to the traits inherited from Black Pearl. Her wings are a power inherited mostly by Lapis Lazuli. Not all Gem Fusions gain extra features, but Obsidian has gained an extra pair of arms like many other Fusions out there.

Origin: HomeWorld
Though Obsidian as a fusion first formed away from Home World, the Gems that make her up were born and/or manufactured on Home World.

Allies
Black Pearl Lapis Lazuli