This classic brooch featuring a Greek key design in a lovely representation of late Edwardian design was produced by the pre-curser to Laykin et Cie, the Laykin Diamond Company in the 1920's in Los Angeles.  Wrought of Platinum and Diamonds it creates a dramatic statement when adorning a lovely structured dress on the shoulder or base of the breast.  These Edwardian pins can also fasten scarves, cashmere shawls or even adorn the hair.  Total weight 8.5 cts of diamonds.