18ct white gold 187ct tanzanite 014ct diamond oval trilogy ring rw 0912 tz the tanzanite collection by tivon showcases one of the worlds most desired stones that is considered a thousand times rarer 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 piece boasts an oval cut 187ct tanzanite stone on a classic white gold band either side of the tanzanite are two