Justinstones Top Grade 16mm Natural Botswana Agate Flatback Oval Cab Cabochon Pack of 8 Cab Size: approx 16x12x5mm, Flat backside. For Jewerly DIY or Making & Design, NO hole drilled High Quality Natural Botswana agate Gemstone, nice marking and color Please note gemstone is unique, You will receive the similar item as shown, not exact ones in picture. The white spots on picture are light reflection, not stone marking.