Sterling Silver Adjustable Starfish and Conch Shell Ring Turtle and Starfish Open Ring in Sterling Silver, Adjustable, Turtle Turtle and Starfish Open Ring in Sterling Silver Adjustable Etsy UK Double Cute Starfish Open Rings Gold Silver Color Alloy Beach Starfish. Pieces: 1 piece Includes: A matching box. Material: 925 sterling silver Care instructions: Avoid wearing during exercise, as sweat will react with the jewelry to produce silver chloride and copper sulfide, which causes the jewelry to deteriorate and corrode over time. Imported Product Measurements (Measurements by inches) & Size Conversion Size Actual Length One Size 0. 6