Half Round Natural & Synthetic Mixed Stone Adjustable Ring, Solid Brass Ring for Women, Platinum, Size: about 17mm inner diameter, 2.5mm wide, stone: 10mm in diameter.âPlease Note: These Gemstone May IncludeNatural Unakite, Natural Tiger Eye, Natural Picture Jasper, Natural Leopard Skin Jasper, Natural Rose Quartz, Natural Black Agate, Natural Red Jasper, Synthetic Turquoise, Natural Aventurine, Synthetic Watermelon Stone Glass, Natural Amethyst and so on(as the picture shows). but as it is a mixed product, the stone type is delivered randomly, please refer to the actual product delivered.