Brilliantly rare. Effy® Jewelry's Tanzanite Royale Collection sources natural stones from the last remaining source in Tanzania and sets each vibrant, multi-hued stone in captivating settings of 925 Sterling Silver and white diamonds. 30 Tanzanite Lobster closure Prong setting Polished finish Lifetime limited liability warranty Imported Product Specifications 7.25 in Length Material & Care Sterling silver Clean with a soft cloth