Available clear topaz, turquoise, emerald, opal, spinel, moonstone, or multicolor gemstones Necklace measures 19" long including extender, length is adjustable Chain links measure 6.1 x 2.6mm Emerald carat weight 9.09 TCW Fastens with a lobster clasp Stones measure 5mm 14K yellow gold Spinel gemstone necklace is one of a kind and each gemstone may appear different from image shown