This ring was made during the Art Deco era. It does not have metal marks but was tested with Nitric acid and a " kee" tester to be 14k solid yellow gold with a platinum top. All diamonds are natural. The center diamond is round and approx .10 cts. The 14 round diamonds which are on the sides have an approx total weight of .30 cts. There is also a straight baguette diamond set on each side of the center stone. The two baguettes have an approx total weight of .10 cts. The diamonds range from SI1 TO SI3 and H to I in color. All round diamonds are European Cut. The ring wears to a size 8 and can be resized.