Sapphire Rectangle RingOne of a Kind The Sapphire Rectangle Ring features a flush set Montana sapphire surrounded by green chrysocolla set in a polished sterling silver ring. This ring is hand carved in wax then through the process of lost wax casting is made into sterling silver. Ring Size: 7 Materials: Sterling silver, green chrysocolla and Montana Sapphire For additional information, please check out our Material Glossary regarding metal finishes and inlay colors.