The cocktail ring has a platinum mark and was tested with platinum acid. It weighs 8.9 grams . Set at the top in the center is a blue oval natural Aquamarine with an approx weight of 1.75 cts. The aqua is surrounded by 45 round single cut natural diamonds with an approx total weight of 1.25 cts. The diamonds range from SI1 TO SI3 and H TO I in color. The ring wears to a size 7 and can be resized.