HIGH-QUALITY AAA CREATED SAPPHIRE 925 STERLING SILVER RING: Gemstone ring for women is made of solid S925 sterling silver, known for strength, brightness and shine. Sterling silver in our women’s ring is tarnish-resistant, ensuring there is no tarnish residue on the skin. Rhodium plating provides a long-lasting luster. Completely hypoallergenic, allergy-free, nickel-free, lead-free, and cadmium free to prevent irritation.