Metal Type: Sterling Silver Metal Stamp: 925 Gemstone Type: Created Opal, Simulated CZ Gemstone Cut: Heart Shape Gemstone Color: Choose Color Gemstone Creation Method: Simulated Face Measurements From South To North: 7mm(0.27") 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 Heart Band Engagement Wedding Ring Round Simulated Diamond 925 Sterling Silver