ART DECO DIAMOND, ONYX AND SIMULATED COLORED STONE BROOCH, CIRCA 1925. Designed as a woman standing in the center of a fountain, her body accented with calibré-cut synthetic rubies, standing on a platform of calibré-cut onyx and synthetic emeralds, completed by numerous single-cut diamonds, mounted in platinum.


Ruby Gemstones Edwardian-era Burmese ruby, calibrè-set emeralds, pear-shaped diamonds, marquise-cut diamonds, gold and platinum pendant. AN ART DECO MULTI-GEM AND DIAMOND BROOCH, BY CARTIER Designed as two buff-top cabochon sapphire, emerald and ruby birds under a carved emerald tree with diamond detail, trunk and base, 1920s, 3.5 cm, with French assay mark for platinum Signed Cartier Paris, no. 02456 Ruby and Diamonds

Ruby, especially Burmese stones over 3cts, are among the rarest and most expensive gemstones in the world. Prized for their beauty, durability, and rarity, it is the quality of the color which most determines the value of the stones. The ideal color is that of a traffic light — a highly fluorescent red of high intensity. Demand for gem quality rubies has always been strong and some mining records from Burma date back almost 500 year — at Multicolour.com ART DECO DIAMOND, ONYX AND SIMULATED COLORED STONE BROOCH, CIRCA 1925. Designed as a woman standing in the center of a fountain, her body accented with calibré-cut synthetic rubies, standing on a platform of calibré-cut onyx and synthetic emeralds, completed by numerous single-cut diamonds, mounted in platinum. ART DECO DIAMOND, ONYX AND SIMULATED COLORED STONE BROOCH, CIRCA 1925. Designed as a woman standing in the center of a fountain, her body accented with calibré-cut synthetic rubies, standing on a platform of calibré-cut onyx and synthetic emeralds, completed by numerous single-cut diamonds, mounted in platinum.

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