Aquamarine: 6mm x 4mm; 14K yellow gold; 7"-7.5"L; Lobster clasp closure; Almost all gemstones and blue and black diamonds have been treated to enhance their beauty and require special care; Photo may have been enlarged and/or enhanced; All gemstone carat weights (tcw) are approximate; variance may be 0.05 carat.; Aquamarine is a birthstone for March; Gemstone Treatment and Care; Imported