Gorgeous Princess Diana Inspired Art Deco Sapphire Ring►Metal type: 925 sterling silver ►Accented with Simulated Diamonds (CZ)Center Stone: SapphireColor: BlueGemstone Creation: 100% Genuine Lab-GrownSapphire Stone Cut: OvalSize: 7.0 x 9.0 mm Carat Weight: 1.86 (approx.)Treatment: Not TreatedHardness: 9 (Mohs scale)Gemstone Origin: Switzerland►Size with Halo: 14.4 x 12.0 mm►Total Carat Weight: 2.28 (approx.)