A Gorgeous Antique Platinum Diamond Brooch, Vintage Art Deco circa 1920. This stunning fine filigree brooch is from the Art Deco Era, circa 1920. The pin is made of platinum topped 14K gold and the filigree work is finely detailed. The center holds an old Euro cut diamond measuring about 3mm in diameter. Overall the brooch measures about just under 2 1/2 inches long by about 5/16 inch wide and is in wonderful vintage condition. It closes with the original clasp with original safety. It is marked 14K on the clasp and the top has been tested positive for platinum. Circa 1920.