Platinum Filigree Cocktail Ring w/ Old Cut DiamondsPlatinum Filigree Cocktail Ring w Old Cut Diamonds. This original antique art deco cocktail ring features 1. 07 carats of old European mine cut diamonds. The ring also makes beautiful use of negative space with filigree detailing and exquisite engraving on the shoulders of the ring. The diamonds are set throughout and provide a stunning sparkle from every angle!