Blue gem

 is a collectable element in The Sandbox Evolution.

Summary
A blue gem that is picked up from killing enemies or raiding chests, which adds to your total score.

Trivia

 * This element can be dropped from the Chest and some killed enemies.
 * In order to place this element as a stand-alone, you need to create a Runner world.
 * In Runner worlds, it adds score to the power-up bar.