An antique French hardstone cameo, circa 1870, the portrait cameo finely carved in solid rose tourmaline and portraying a Regal lady with flowing hair, reputed to depict Madam Armand, having applied detailed gold and diamond set coronet, necklace and earrings, to a gold foiled ground, framed in 18ct yellow gold with bright cut engraved scalloped border with black and white enamelling, having a further outer engraved flange, boxed