18ct White Gold 1.87ct Tanzanite Diamond Three Stone Oval Ring. TVN-128. The Tanzanite collection by Tivon showcases one of the world\'s most desired stones that is considered even more rare than the diamond. This seductive gemstone can exhibit a variety of surreal colours including blues, violets and burgundies so each piece is truly unique and beautiful. This exquisite ring features an oval cut 1.87 carat Tanzanite gemstone, discovered in the Mererani Hills of Northern Tanzania. The beautiful 18ct white gold frame is embellished by dazzling 0.14 carats of brilliant cut diamonds. The breathtaking ring is an embodiment of elegance and luxury with Tanzanite being one of the world\'s most desired stones.  All articles are lovingly and securely dispatched with our elegant jewellery packaging.