Chrysoberyl is a transparent to yellowish-green crystal found mostly in granite and composed of the mineral beryllium aluminate. Chrysoberyl is not related to the beryl family of gemstones which produces emeralds despite the similarity of the names. Chyrsoberyl has three gemstone varieties: greenish-yellow chrysoberyl, the color-shifting alexandrite and cemophase or cat's eye chrysoberyl. It rates an 8.5 on the Moh's Scale of Hardness and is ideal for jewelry of all types.
See Also: alexandrite, Moh's Scale of Hardness,