Robert Rosenberg

Robert Rosenberg

Robert Rosenberg
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AN EMERALD AND DIAMOND RING, BY VAN CLEEF & ARPELS Set with an square-cut emerald, weighing approximately 5.78 carats, flanked on either side by a trillion-cut diamond, mounted in gold, with maker's mark, in a Van Cleef & Arpels gray suede box Signed V.C.A., for Van Cleef & Arpels, N.Y., no. 4226 S.O. (Special Order)

AN EMERALD AND DIAMOND RING, BY VAN CLEEF & ARPELS Set with an square-cut emerald, weighing approximately 5.78 carats, flanked on either side by a trillion-cut diamond, mounted in gold, with maker's mark, in a Van Cleef & Arpels gray suede box Signed V.C.A., for Van Cleef & Arpels, N.Y., no. 4226 S.O. (Special Order)

Art Deco sapphire and diamond ring, circa 1910. It is millegrain set with a cushion cut diamond, the surrounding calibre cut sapphires forming a lozenge, diamond dart highlights to the corners and a diamond set outer border.

Art Deco sapphire and diamond ring, circa It is millegrain set with a cushion cut diamond, the surrounding calibre cut sapphires forming a lozenge, diamond dart highlights to the corners and a diamond set outer border. Via Diamonds in the Library. by ruth