Tanzanite Ring | Cabochon Round | 925 Silver IJGenuine Tanzanite Round Cabochon Ring 925 Sterling Silver. Beautiful authentic Tanzanites. Nice blue stone with hint of violet and inspiring bright inner light. Well made Silver Rings ~ Besel Set with a wider oxidised Border which visually creates a lovely frame for the stone. Tanzanite inspires you to reach your highest spiritual potential while still working in the Material World. In many disciplines climbing that Moutain is set up to be hard work.