Kentshire | An Art Deco old European cut diamond engagement ring flanked by calf's head onyx in an engraved setting, in platinum. Atw OEC: 5.60cts, K-VVS1. GIA cert 2145386332. | New York

Kentshire | An Art Deco old European cut diamond engagement ring flanked by calf's head onyx in an engraved setting, in platinum. Atw OEC: 5.60cts, K-VVS1. GIA cert 2145386332. | New York

Mann's+Jewelers+An+Art+Deco+emerald-cut+diamond+ring+flanked+by+two+trapezoid-cut+diamonds,+with+sapphire+accents,+in+platinum.+Atw+center+diamond+1.24cts,+H-I+color,+VS1+clarity.++Atw+all+diamonds,+2.78+cts.++(Currently+a+size+6.)

Mann's+Jewelers+An+Art+Deco+emerald-cut+diamond+ring+flanked+by+two+trapezoid-cut+diamonds,+with+sapphire+accents,+in+platinum.+Atw+center+diamond+1.24cts,+H-I+color,+VS1+clarity.++Atw+all+diamonds,+2.78+cts.++(Currently+a+size+6.)

Art Deco Platinum, Onyx, and Diamond Brooch, set with fancy-cut black onyx, old European-cut diamond accents, millegrain details, no. 3044, lg. 2 in., maker's mark.

Art Deco Platinum, Onyx, and Diamond Brooch, set with fancy-cut black onyx, old European-cut diamond accents, millegrain details, no. 3044, lg. 2 in., maker's mark.

Lacloche Freres Art Deco, Diamond, Onyx, Pearl and Platinum Bracelet. A French Art Deco platinum bracelet with diamond, onyx, and pearl by Lacloche Frères. The bracelet has 256 old European-cut diamonds with an approximate total weight of 9.50 carats, 64 calibre-cut onyx and 5 natural pearls (not tested). With original box. Circa 1920's.

Lacloche Freres Art Deco, Diamond, Onyx, Pearl and Platinum Bracelet. A French Art Deco platinum bracelet with diamond, onyx, and pearl by Lacloche Frères. The bracelet has 256 old European-cut diamonds with an approximate total weight of 9.50 carats, 64 calibre-cut onyx and 5 natural pearls (not tested). With original box. Circa 1920's.

Art Deco Diamond, Onyx & Platinum Ring. One of a kind Art Deco ring centering a large bezel-set, cushion-shaped full-cut diamond, 3.10 carats, color: I-J, clarity: VS2, surrounded by onyx and intricate platinum work set with 40 single-cut diamonds weighing approximately .42 carats. Head of ring measures approximately 1 1/4 inches vertically.  Via 1stdibs.

Art Deco Diamond, Onyx & Platinum Ring. One of a kind Art Deco ring centering a large bezel-set, cushion-shaped full-cut diamond, 3.10 carats, color: I-J, clarity: VS2, surrounded by onyx and intricate platinum work set with 40 single-cut diamonds weighing approximately .42 carats. Head of ring measures approximately 1 1/4 inches vertically. Via 1stdibs.

Set of Four Art Deco Platinum Gem-set Acrostic Stacking Rings, T.B. Starr, set with a square-cut diamond, cabochon emerald, cabochon amethyst, and fancy-cut ruby, all with conforming shoulders, spelling out “DEAR”, engraved accents, approx. size 5 1/2, signed. At Skinner.

Set of Four Art Deco Platinum Gem-set Acrostic Stacking Rings, T.B. Starr, set with a square-cut diamond, cabochon emerald, cabochon amethyst, and fancy-cut ruby, all with conforming shoulders, spelling out “DEAR”, engraved accents, approx. size 5 1/2, signed. At Skinner.

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