Silver tanzanite rings are not very common as most jewelers offer tanzanite rings only in gold. The few tanzanite silver rings that you find will either have low grade tanzanite or fake tanzanite gems. The 925 silver ring with tanzanite shown in this video has a good quality, genuine tanzanite gem. See more tanzanite rings here http://www.tanzanite.kaijewels.com/tanzanite-ring-all-kj-01.htm