Rare 1.52ctw blue/green Tanzanite ring size 7. All though fairly rare, Tanzanite does come in other colors other than purple/blue. This beautiful 10K white gold ring has 1.52ctw of marquise cut blue/green natural Tanzanite stones. This color also has an industry name of Ocean Tanzanite and has been a more rare color of this precious stone. *Viewing and/or pickup of jewelry only M-F 8:30 to 4:00. *Description provided by the seller.