Gold Heart Pendant Necklace, 18K Gold Filled Heart Necklace, Waterproof 18k Gold Plated Heart Pendant Necklace Made With Swarovski Elements Chic 18k Gold Plated Stainless Steel Heart Pendant Necklace Bracelet 18k Gold Plated Heart Pendant Necklace Made With Swarovski Elements Necklace 18K Diamond Heart Pendant Necklace 18K White Gold Pendant 18K Gold Plated Pendant With Heart Memorable Gifts. 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 Chain length Extension chain length One Size 16. 3 1. 8