These are such great earrings. They are large, have an engraved design, and a heart shaped center of inlay gemstones of malachite, turquoise, coral, lapis and spiny oyster. These earrings are hallmarked Sterling and signed TK. I researched and saw several pieces of jewelry marked TK but could never determine the designer. If anyone knows, I would love to hear. Sterling silver gemstone pierced can be found here.