Danburite

About Danburite

A calcium borosilicate mineral named after Danbury, Connecticut, where it was first identified in 1839. Clear crystals resemble topaz but can be told apart by their poor cleavage. Fine specimens come from Charcas in Mexico, Myanmar, and Japan. Faceted stones are bright and durable, making it a popular collector gem. Pink and yellow varieties are rare. The original Danbury locality is now built over by the city.