Citrine quartz and diamond brooch, Cartier, Paris, circa 1930 Set with an oval citrine weighing approximately 22.75 carats, within an arched frame set with 46 old European-cut and single-cut diamonds weighing approximately 1.50 carats, mounted in platinum,...

Aquamarine, sapphire and diamond brooch, Cartier, Paris, circa 1930 Centering a cushion-shaped aquamarine weighing approximately 13.90 carats, bordered by buff-top calibré-cut sapphires and pavé-set single-cut and old European-cut diamonds weighing approximately...

Carved ruby and diamond ring, Cartier, Paris, circa 1930 The foliate motif set with a carved ruby leaf, further enhanced with old-mine and single-cut diamonds and with 4 round cabochon rubies, mounted in platinum, size 7½, signed Cartier, made in France,...

Carved ruby, emerald and diamond pin, Cartier, Paris, circa 1930 The stylized topiary motif set with a carved ruby leaf, a pear-shaped emerald and small round and single-cut diamonds, accented further with 4 small cabochon emeralds and black enamel, mounted...