40x30mm Oval Cabochon CAB Flatback Semi-precious Gemstone Ring Face (Blue Sea Sediment Jasper & Copper) Cabochon Size: Approx 40x30mm ( 1.57 x 1.18 inches ) Thickness: Approx 7 to 9mm Weight: Approx 14g to 20g / pc You will receive the similar item as picture shown the sea sediment jasper is colored