Our Alaxandrite collection contains a limited number of these hard to find well terminated crystals. Alexandrite is rare Green chromian bearing variety of Chrysoberyl that can exhibit a color change in natural and artificial light from green to "amethystine". This is called the Alexandrite effect. Some inclusions found in Alexandrite are mica platelets, apatite, and rutile. Alexandrites are one of the rarest gemstones in the world. We gift wrap every order and offer free shipping in the US.