Here is a 20" Long 9.00Ct Tanzanite Necklace in Sterling Silver. This has bright medium purple Tanzanite Ovals prong set all the way around the neck. The total Tanzanite weight is approximately 9.00Cts. This is marked 925 for Sterling Silver. Tanzanite is the December birthstone. This has a double locking safety clasp. This 9.00Ct Tanzanite will come in a big necklace gift box and with free shipping. $250.