Our exotic wood and ceramic ring core blanks are pre-channeled for easy inlaying; breakaway material means they are safe to wear every day. Available in 9-14 standard ring sizes, including 1/2 sizes. Pre-sanded for an optimal, comfortable fit. Bold style ring is 8mm wide, groove is 4mm wide. Note that these products are made from nature, there may be variations in color or figure than in the image shown.