18ct white gold 166ct tanzanite 051 carat diamond cluster ring j03514m our tanzanite collection showcases one of the worlds most desired stones 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 strikingly elegant ring showcases a cushion shaped 166ct tanzanite set onto a beautifully contrasting 18ct white gold band the tanzanite is f