Sterling Silver Swiss Blue Topaz Heart Pendant Necklace, 18" A small gemstone round is nestled at the center of this sterling silver heart pendant, which dangles from an elegant box chain. Crafted in .925 sterling silver The natural properties and composition of mined gemstones define the unique beauty of each piece. The image may show slight differences to the actual stone in color and texture. Gemstones may have been treated to improve their appearance or durability and may require special care. Imported