Sterling Silver, Gemstone, and Diamond Heart Pendant Necklace, 18" All our diamond suppliers confirm that they comply with the Kimberley Process to ensure that their diamonds are conflict free Sterling silver heart pendant featuring heart-shape gemstone with round diamond accent 18 inches sterling silver box chain with spring ring clasp Gemstones may have been treated to improve their appearance or durability and may require special care. Imported All measurements are approximate and may vary slightly from the listed dimensions.