Metal Type: Sterling Silver Metal Stamp: 925 Gemstone Type: Lab White Opal, Simulated Diamond Gemstone Shape: Princess Cut Gemstone Creation Method: Simulated Center Stone Measurements: 7.5mm Ring Measurements South to North: 14mm Available in different metal colors & stone colors as well. Please message me for inquiry! Halo Princess Cut Lab White Opal Infinity Shank Wedding Engagement Bridal Ring Vintage Art Deco Cz Solid 925 Sterling Silver Cushion