This is a fabulous 18k yellow gold ring by Tiffany & Co. The ring is centered with a lovely oval cut tanzanite that weighs approximately 3.00ct. The center stone is accentuated by sparkling round cut diamonds that weigh approximately 1.40ct. The color of these diamonds is E with VS clarity. The top of the ring measures 16mm by 16mm. The ring is signed TIFFANY&Co. 18K and weighs 6.9 grams. The ring is size 6 1/2 but it can be resized.