Amethyst and Turquoise are the official gemstones to celebrate your 6th Anniversary. Amethysts are a purple gemstone belonging to the quartz family and can range in color from light lilac to a deep royal violet, while Turquoise is an opaque material that occurs in various shades of blue and green. Amethysts carry passionate and creative energy, while deflecting negative energy. Turquoise promotes inner-peace and stability.