Sunstone is not enhanced. In the 1970's, the company expanded to the Providence, Rhode Island, USA - they later moved to Cranston, Rhode Island. In 1955, Swarovski and Christian Dior developed the iridescent aurora borealis stone. The company began a line of rhinestone costume jewelry in 1977. This California company uses unusual designs and pieces are often figural.
Pieces often havae cultured pearls, moonstones, and other semi-precious stones.
They are very hard to distinguish from natural stones.