40x30mm Oval Cabochon CAB Flatback Semi-precious Gemstone Ring Face (amethyst) Cabochon Size: Approx 40x30mm ( 1.57 x 1.18 inches ) Thickness: Approx 7 to 9mm Weight: Approx 14g to 20g / pc Quantity: 1 Pcs Natural Gemstone The sea sediment jasper is colored The Lapis Lazuli is colored