Aquamarine: 8mm; 14K white gold; Post back; Almost all gemstones 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.; White gold is surface-coated with rhodium to enhance metal color and shine; it may wear off over time requiring replating.; Aquamarine is a March birthstone; Made in USA