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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

Emerald Cut Diamond and Onyx Platinum Ring

I love love love this one! It's simple but still Art Deco. i really like the black onyx surrounding the diamond...i like it with this faded platinum or yellow gold. Emerald Cut Diamond and Onyx Platinum Ring

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.

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.

Platinum setting, .95 carat marquise cut diamond accented with calibre cut onyx, french cut, single cut and triangle cut diamonds. Circa 1920. I love this ring!