Lapis Lazuli, or Lapis for short, is a member of the Crystal Gems, who made her debut in "Mirror Gem".

During her alignment with the Gem Homeworld, she was caught in the crossfire of The Rebellion and got poofed by Bismuth. Homeworld mistook her for one of the Crystal Gems and imprisoned her within a magical mirror with the intention of interrogating her about her supposed comrade's whereabouts.