Art Deco Platinum, Sapphire, and Diamond Plaque Brooch, Marcus & Co., centering three step-cut sapphires, with baguette- and fancy-cut diamond edges, and set throughout with transitional-cut diamonds, approx. total diamond wt. 4.30 cts., lg. 2 1/8 in., signed, in original box.

This clever piece from Tiffany can serve as a brooch or as a pair of matching clips. As an Art Deco fashion statement it was a perfect accent for the square collars in fashion but now can be worn as double lapel clips. The diamonds and rubies of this piece are set in platinum. by Tiffany and Company American, ca. 1930

 

 

 

 

 

Each clip of geometric design embellished with stylized scroll motifs, set with circular-, single-cut and baguette diamonds, further accented with lines of step- and calibré-cut emeralds, fitted case.

A diamond and emerald brooch, Tiffany & Co. of foliate motif, detailed with calibré-cut emeralds and baguette-cut diamonds, further accentuated by a ribbon of round brilliant-cut diamonds; signed Tiffany & Co; estimated total diamond weight: 2.50 carats; mounted in platinum; length: 2 1/4in.

Art Deco Diamond, Emerald, Platinum Brooch, Lacloche Frères The brooch features European-cut diamonds weighing a total of approximately 7.55 carats, accented by single-cut diamonds weighing a total of approximately 1.05 carats, accented by emerald and baguette-shaped emeralds weighing a total of approximately 1.85 carats, set in platinum, completed by a pinstem and catch on the reverse, marked Lacloche, Paris.

An art deco sapphire and diamond brooch, circa 1925 centering an oval-shaped sapphire framed with several successive rows of old European and single-cut diamonds and calibré and triangular-cut sapphires; central sapphire weighing approximately: 2.50 carats; estimated total diamond weight: 2.60 carats; mounted in platinum.

The tapering openwork plaque of scrolling design collet-set with graduated oval-cut sapphires, brilliant and baguette-cut diamonds, diamonds approx. 2.85cts total, signed J R Ogden & Sons, length 4.9cm, fitted case.

A belle époque sapphire and diamond brooch, circa 1910 The rectangular plaque finely pierced and millegrain-set with single-cut diamonds, set to the centre with three graduated old brilliant-cut diamonds interspersed with single-cut diamond floral decoration and courses of calibré-cut sapphires, diamonds approx. 2.00ct. total, width 4.1cm., fitted case