Previously belonging to Pink Diamond, Spinel was abandoned by her for thousands of years, left waiting alone in the garden. After 6,000 years of standing still, Spinel finally had gotten news on what has become of her Diamond.

How long did Spinel wait in the garden?

Steven follows Spinel to a desolate garden in space, where she reveals her backstory: When Pink Diamond began the Gem colonization of Earth, she told Spinel to wait for her in the garden; Spinel was left there alone for 6,000 years before learning that Pink Diamond no longer exists ("Drift Away").

Is Spinel a boy or girl?

If you have any doubt, let's look into Russian language: among all fine gems' names, the only one in feminine gender is Spinel.