Item Specifications: Metal Type: Sterling Silver Metal Stamp or Hallmark: 925 Metal Purity: 92.5% Sterling Gemstone Type: Grade AAA Russian CZ Face Measurements From South To North: 6mm (0.28 Inch ) Band Thickness: 1MM Finish: Rhodium for Anti-Tarnish Don't know your ring size? Here you can find a link to a conversion table of all ring