Desert Glass

The "Desert Glass" is a corrupted Gem that made its first appearance in "Steven's Lion".

About
The Desert Glass appears as a round, light green gemstone with a white edge embedded in a red pillow. For an unknown reason it became aimless, and now creates pillars, stairs and walls randomly while in its element. When placed on sand it creates a sandstorm and a fortress to protect itself. The Crystal Gems retrieved it from a desert, not knowing that the glass had a Lion guardian. Amethyst decided to hold on to it because she was the one who stopped it. Because Amethyst failed to contain it immediately, Steven accidentally set it off in the sand on the beach near the Crystal Temple. After Lion and Steven recovered it, the Desert Glass was finally contained by Pearl.

Abilities

 * Psammokinesis: The Desert Glass possesses strong control over sand so long as it is in contact with it, building a fortress, creating pillars, and creating powerful sandstorms.

Gemology
Desert Glass is natural glass. Gemstone Info here. 

Trivia

 * The Desert Glass is the second known corrupted Gem to not take on a monstrous form, the first being the Obelisk within the Pyramid Temple.