Fancy cut (quarter round) Mystic Topaz measures 7 mm & weighs 1.35 ct. The gem, sourced from Brazil, is purple, green & amber in color. Set in sterling silver; size 6.75. All of my items are made of solid Sterling Silver & Solid Karat weight gold (no filled or plated) with natural gemstones. item #3005 Fancy Cut Brazilian Mystic Topaz Ring in Sterling Silver #3005