Natural Free formed Shungite Stone 19mm x 12mm 6mm rolled edge band Marked 925 ring Size 7 Our Sterling silver items have been tested with acid before listing and are guaranteed to be at least the advertised purity. We clean and lightly polish our silver before sale but do not remove patina from age. If you would like a piece to be polished further, please leave a note when placing your order. We're proud to pack and ship our items within one business day. All items ship through standard service. Expedited service may be available at an additional fee. All items are packed and shipped securely wrapped and protected. Items over $200 USD will be shipped with insurance.