Vintage Deco Three Stone Diamond Ring in 18k White Gold.  This vintage Art Deco ring features three (3) diamonds totaling .90 carats and is finished in 18 karat white gold. One of the hallmarks of the Art Deco period was celebrating the beauty of the emerging technologies of the early 20th century and there is no easier place to see it than in a ring like this. The beautiful filigree work on the shoulders and the open lines along the gallery make this a memorable Art Deco piece.