color changing variety of chrysoberyl

What is alexandrite?

Alexandrite is named for the former czar of Russia, Alexander II, and was first discovered in the Ural Mountains of Russia, supposedly on the day of his birth. Chromium gives alexandrite its color and while in most minerals a trace element like chromium would provide only one color to the mineral, in alexandrite it gives it two!


Audio Recording on Friday afternoon by librarylisa2