Bonhams : An 18k gold open link chain necklace 18K gold plating Link Chain necklace Jewelry and Accessories 14k Solid Gold Open Chain Ring With Diamond Accent Minimalist Link Band 14K Solid Gold Chain Link Ring Bold and Sophisticated Regal Fine. Pieces: 1 piece Material: 18K Gold Plated,Copper 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 Circumference 6 2. 1 7 2. 2 8 2. 3