Smoky Quartz Ladies Ring Sterling SilverSmokey Quartz Ring This elegant Sterling Silver ring features an elongated Oval brilliant cut Smoky Quartz. The stone is set in an intricately handmade Bali style bezel. Smoky Quartz is a member of the Quartz family and has a Mohs hardness of 7. Like other varieties of Quartz, it has a hexagonal crystal system that produces prisms across its surface. Ring & Gemstone Size: This ring is a size 8 The Smoky Quartz gemstone is 20 mm long and 11 mm wide