This vintage ring is excellent quality with 9 fiery princess cut diamonds averaging I color and VS-2 clarity. Approximate diamond weight is 1.08 carats. The ring has a unique shape and design. It has a diamond shape in the center that is platinum. The rest of the ring is 18k yellow gold. It is marked on the ring shank 18k platinum. Ring size is 5-1/4 and weight is 9.3 grams. The platinum portion measures 9mm by 9mm.