You are viewing a lovely period 18K white gold with a Platinum top filigree ring made around 1920. The ring is all hand made. The ring measures 21 mm or just over 3/4" long up the finger by 18 mm or 3/4 " across.Set on top are fine quality old mine cut Diamonds with a center stone weighing 0.30 points. The total Diamond weigh is around 3/4 of carat in total. The workmanship on the filigree mounting is very fine. One area under the top in a long rectangular size, see photo, is detached but present. The ring is marked: 18K PLAT. The ring is a size 6 with a thin shank and can be re-sized. The ring weighs 3 grams.