Crystal Dragon

The Crystal Dragon is a character in King's Quest VII. She is the guardian of a large pile of red diamonds within a crystal cave adjacent to the Realm of the Trolls. In the game, she has lost her spark and Rosella must retrieve it from the silversmith's fire using the lantern she acquires from the sulfur cave. After she receives the spark, she will fly away thanking Rosella. Once Rosella acquires the hammer and chisel, she can return to find the dragon sleeping. She can then take one of her scales for Matilda's potion to turn her back into a human.