18K EDWARDIAN DIAMOND SOLITAIRE FILIGREE RING: 18K white gold filigree solitaire ring contains one old European round cut diamond in an octagonal filigree setting. Diamond weight: .40 Ct. Approx. Rated SI2 in clarity and H in color. The diamond is prong set. Weight: 1.9 grams. Size: 6 Est. $450/550**