A BLACK DIAMOND DRESS RINGThe shaped oval panel set with brilliant cut black diamonds, approximately 2 carats total, stamped 750 with an indistinct maker's markSize/dimensions: panel 4.8cm long, finger size N 1/2Gross weight: 18.6 gramsProvenance: from the collection of Victoria, Lady de Rothschild品相: The panel is shaped to fit over a knuckle, the diamonds are all present and correct, the signature has been double struck, but appears to possibly be mkrj.