Kay Jewelers Aquamarine Necklace 3/8 ct tw Diamonds 14K Vanilla Gold- Aquamarine: Twists of Le Vian Chocolate Diamonds® and brilliant Vanilla Diamonds™ encircle a vibrant oval Sea Blue Aquamarine® in this exciting necklace for her. Dangling from an 18-inch cable chain, this necklace is secured by a lobster clasp. This fine jewelry necklace is crafted in rich 14K Vanilla Gold™. Le Vian®. Discover the Legend.