Set the dial to "dazzle" with this attractive amethyst briolette necklace. Beautiful amethyst and tanzanite gems sparkle becomingly from an 18-inch chain, the perfect length to offset the graceful curve of a woman's collarbone. This iridescent pastel necklace features an easy-to-use sterling silver lobster-claw clasp, and pairs beautifully with crisp white tops and dark denim jeans.