Kay Jewelers Tanzanite Ring 1/2 ct tw Diamonds 14K Vanilla Gold- Gemstone: A scrumptious oval Blueberry Tanzanite™ is framed by brilliant Vanilla Diamonds™ in this elegant ring for her. Twists of round Le Vian Chocolate Diamonds® decorate either side of the 14K Vanilla Gold™ band. The ring has a total diamond weight of 1/2 carat. Le Vian®. Discover the Legend.