Art Deco diamond ring features a center European mine cut diamond of approximately .30 carat set into a hexagonal high setting in an 18 Karat white gold filigree ring. The ring has a beautiful openwork filigree raised setting that sets the diamond up high to make it appear larger and more important than it already is. It weighs 2.5 grams and is signed inside the shank with some illegible scratched in marks and a stamped mark, 18K, (shown under magnification in our photo), which I almost mistook as "BK" because of the manner in which the shank of the ring is stamped. It has also been tested as 18K by a jeweler. In Excellent Condition, dating Ca. 1930. It is a Ring Size 5-1/2, but can be sized if desired. A superb vintage Art Deco filigree and diamond ring that will make an heirloom engagement ring or right hand anniversary ring!