1920s emerald and diamond open circle brooch

1920's Art Deco Diamond and Onyx Circle Brooch in Platinum Great For a Formal Occasion or a Casual Wear Fourteen Old Mine Cut Diamonds Weighing .45 Carats Approximately Thirty Fre...

Tiffany & Co. Antique Art Deco Palladium & Diamond Circle Brooch Circa 1920s Here is your chance to purchase a beautiful and highly collectible designer brooch. Truly a great piec...

An emerald, diamond and onyx Art Deco brooch, ca. 1920, in platinum. The facetted square emerald weighs 2.14 carats and is of Columbian origin. It has an old mine vivid green colour...

Art Deco Emerald and Diamond Brooch Clips Circa 1920's in Platinum Two Cushion Cut Emeralds Weighing .70 Carats Approximately Two Old European Cut Diamonds Weighing .65 Carats Appro...

Colombian Emerald and Diamond Necklace/Brooch circa 1920s GIA Certified One Emerald Cut Emerald 3.50 carats approximately GIA Certified Columbian with The Minor Treatment. [The Emerald has been in The Mounting Since It's Original Construction in The 1920's The Treatment would be Nothing More Than The Oil of The Day] Two Old European Cut Diamonds weighing 1.65 carats approximately [GH VS2 - SI1] Two Old European Cut Diamonds weighing 1.25 carats approximately [GH VVS-VS] Exceptional Quality Throughout Platinum Diamond Chain...

Platinum and 18 Karats white gold brooch. A sublimely delicate piece of antique jewelry, this brooch with its geometric, openwork lines is set with millegrain-cut cushion-cut diamond...