Item Specifications: Metal Type: Solid Sterling Silver Metal Stamp or Hallmark: 925 Gemstone Type: CZ, Lab White Opal Gemstone Cut: Round, Oval Center stone measurements: 6mmx4mm Gemstone Cut : Excellent Gemstone Color: Clear, Lab White Opal Gemstone Cut : Ideal Face Measurements from South to North: 8mm (0.4 inch) Band Thickness: 2mm Finish: Rhodium for Anti-Tarnish Engraving Available Please Send me a Message. Size: Available In All Sizes (Resizing Available) Plating: Rose Gold Rhodium