You are viewing a 14K white gold filigree ring from the Art Deco era of the 1920's. The ring measures 13 mm or 1/2" long up the finger by 17 mm or just under 3/4" across. The ring is set with a 3 carat natural Australian harlequin Opal. The ring is beautifully engraved and has yellow gold butterfly style shoulders. The ring is marked: 14K. It is a size 5 1/2 and can be re-sized. The ring weighs 2.1 grams.