Gem dragons are a classification of dragon based on "gem type rather than color or metal" found in the role playing game "Dungeons & Dragons". They are typically of neutral alignment with respect to good and evil, but some kinds are quite egoistic and awful company nevertheless. The Gem dragon family comprise Amethyst Dragons, Crystal Dragons, Emerald Dragons, Sapphire Dragons, and Topaz Dragons. Sardior is the deity of gem dragons. Although Obsidian Dragons are also technically gem dragons, they are opposed to Sardior and most other gem dragons.