Genuine amethyst & diamond necklace. There is one round natural amethyst measuring 6mm in size and 6 tapered baguette that are about 0.16 ct tw, SI1-2 in clarity and G-H in color. The pendant dimensions are 13x6mm in size and hangs on an adjustable 16-18" inch chain. Available in white, yellow, and rose gold; as well as platinum. Amethyst is the birthstone of February. Amethyst encourages the wearer humility and wisdom. It was also believed those wearing amethyst would keep their mind clear.