Oval Cabochon CAB Flatback Semi-precious Gemstone Ring Face 25x18mm (Orange Sea Sediment Jasper) Size: approx 25x18mm (1.0x0.7 Inches) Thickness: Approx 5 to 7mm Weight: Approx 4g to 7g / pc Quantity: 1 Pcs Man made stone colored The sea sediment jasper is colored,Larvikite Picasso jasper is natural stone