Tanzanite Ring 14kt White Gold. This is a nice ladies tanzanite ring in 14kt white gold. The loop style ring is set with seven oval cut tanzanites, medium-light, violet-Violetish blue in color. They weigh approximately 0.60cttw. The ring was cast and handset with a bright polish finish, it is in very good condition. The ring size is 7; it is hallmarked: 14kt and includes an insurance appraisal of $1150.00.