Navy: Mens 5.0ct Simulated Sapphire USA Navy Military Signet Ring 316 Stainless Steel, 3061 Rugged, handsome and durable Mens USA - US Navy 316L Stainless Steel Ring Features a 5.0 carat Simulated Blue Sapphire bezel set solitaire. Made with solid Stainless Steel 316L. Made with solid 316L Surgical Stainless Steel so you know that it's made to last!