This ring really makes a statement. It is marked 18k and is solid white gold. It weighs 7.4 grams. The top of the ring is oval in shape and measures 1" North to South. Set in the center is a oval bluish purple natural tanzanite with an approx weight of 4.50 cts. Set around the tanzanite are 132 round brilliant cut natural diamonds and 12 baguette natural diamonds. The 144 diamonds have an approx total weight of 1.25 cts. The ring wears to a size 7 and can be resized.