Rare gemstones like Alexandrite, Tanzanite, Larimar, and Benitoite offer unique beauty and properties. Alexandrite changes ...

Alexandrite is a rare variety of mineral that changes color depending on the light, according to the Geological Institute of America. Some even call it "emerald by day, ruby by night." The stone ...

May features a deep emerald, and June features alexandrite, a light purple stone. July is a deep red ... an enamel Mickey-shaped frame in the same color and is strung on a gold chain.