Alexandrite is part of the Chrysoberyl family of gemstones. Alexandrite, the rare color-change variety, is green in daylight and reddish in artificial incandescent light.
Known for its brilliance and luster, clean stones are the most valuable of this gemstone family. Alexandrite deposits are in Brazil (Minas Gerais), Madagascar, Myanmar (Burma), Sri Lanka and Tanzania. The largest cut alexandrite, 66ct, belongs to the Smithsonian Institution in Washington D.C.!