Any organic life living on a colonized planet would be killed since the process of creating new Gems completely strips a planet of its lifeforce, making the world unsuitable for new life to form. As noted in ' It Could've Been Great', once suitable planets were located, they were exploited through facilities known as Kindergartens (which drains a planet's resources to create new Gems) and are terraformed to be made fit for Gem settlements.

The goal of the Gem race was to expand the Diamonds' 'perfection' across the universe by traveling to other planets and establishing colonies. Deviation from a Gems' given purpose resulted in punishment, which could sometimes escalate to shattering (the destruction of a Gem). The higher up on the Caste System a Gem was, the more privileges and responsibilities they had. For instance, Pearls were servants and considered to be lower-ranking Gems, while the Diamonds were the highest-ranking Gems.

In this society, the Diamonds ruled over Gemkind, which consisted of a variety of Gems, each assigned a different role based on their Gem-type according to the Caste System that was implemented. What is known, however, is that Homeworld used to be a totalitarian, oligarchical society governed by the Great Diamond Authority. Little is known about the Gem Homeworld and its previous history, culture, and society.

Homeworld steven universe