Alexandrite is in the Chrysoberyl mineral family and is one of the most fascinating gemstones throughout history. Alexandrite is the variety of Chrysoberyl that displays a change-of-color from green to red. A distinct color change is the primary qualification for a Chrysoberyl to be considered alexandrite. Alexandrite changes color from green in daylight to red in incandescent light. Alexandrite was first discovered in Czarist Russia, in the Ural Mountains, in 1830. The name "Alexandrite" was coined by mineralogist Nordenskjold. Genuine Alexandrite is one of the worlds rarest and most coveted Gemstones.