Metal: 925 Sterling Silver Stone: Red Spiny Oyster Size: 20mm x 20mm Weight: 9.1g Hallmarks: DTR, China, 925 E01-P1124 PLEASE NOTE: This item is pre-owned and/or vintage. Patina, tarnish, surface wear and/or flaws may be present. Please inspect all photos as part of the description. Please ask all questions before purchase. No assertions are made as to color interpretation. Video taken during packing for buyer/seller security. Recycled shipping materials used.