Name: Spinel

Age: Gem don't age

Looks:

Gem: Sapphire and Rube

Sexuality: Bi

Homeworld or Crystal Gem: Crystal Gem

Fusion?: Yes. Fusion of Alex and Mia.

Backstory: Spinel fell to Earth and infused back to Sapphire and Rube. They bonded and gave each other the names of Alex and Mia. Alex for a Sapphire and Mia for Rube. They fused again and found the Crystal Gems, joining them.

Other: No one knows there a fusion.