Homeworld

Homeworld is the official capital of the Gem Empire which sprawls from one edge to the other of half the Andromeda Galaxy. It seems to be split into two main sections which guard a massive object in the center. All three diamonds live on it in "massive palaces." Gem records state it has a population of three trillion gems.

No official photos have been taken in high detail, but one direct-imaging image captured a sneak peek at the eumencopolis.