Metal Type: Sterling Silver Metal Stamp: 925 Gemstone Type: Created Opal, Simulated CZ Gemstone Cut: Round Shape Gemstone Color: Choose Color Gemstone Creation Method: Simulated Face Measurements From South To North: 9mm(0.35’) Center Stone Measurements: 6mm(0.23") Approximate Center Stone Carat Weight: 0.84ct Also, upon request, available in 10K yellow gold, 10K White gold, 14K Yellow gold, 14K White gold Changing Center Stone Color Changing Metal Color Resizing Halo Wedding Engagement Ring Infinity Twisted Shank Round Simulated Diamond 925 Sterling Silver