This beautiful Blue Tanzanite prong-set cluster ring is set with 14 oval Blue Tanzanite, (2.94ctw); accented by 2 White Zircon rounds on each side of the ring in the split shank space at the top of the band, 4 total White Zircon rounds (.14ctw). Size 8.5. New with tag! Purchased from JTV. Stamped BBJ 925 * Since its discovery in 1967, the violet blue stone has been prized for its color and rarity. And with deposits expected to run out in the next twenty years, this already precious stone is expected to become more valuable in the coming years.