Diamond brooch

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AN ART DECO SAPPHIRE AND DIAMOND BROOCH  The central oval sapphire within openwork brilliant and single-cut diamond surround to the baguette-cut sapphire and diamond line terminals, circa 1925, 6.3 cm. wide, with French assay marks for platinum and gold

AN ART DECO SAPPHIRE AND DIAMOND BROOCH The central oval sapphire within openwork brilliant and single-cut diamond surround to the baguette-cut sapphire and diamond line terminals, circa 1925, 6.3 cm. wide, with French assay marks for platinum and gold

An antique sapphire and diamond brooch, late 19th century. Designed as a sunburst mounted en tremblant, set with a cushion-shaped sapphire weighing 12.96 carats and cushion-shaped, circular-cut and rose diamonds, brooch fitting detachable. #antique

An antique sapphire and diamond brooch, late 19th century. Designed as a sunburst mounted en tremblant, set with a cushion-shaped sapphire weighing 12.96 carats and cushion-shaped, circular-cut and rose diamonds, brooch fitting detachable. #antique

A diamond brooch, circa 1955. The three strands of brilliant and baguette-cut diamonds arranged in the form of a knot and tassel, around a central brilliant-cut diamond, principal diamonds weighing 1.40, 1.26, 1.20 and 0.98 carats, remaining brilliant-cut diamonds weighing approximately 4.50 carats total, baguette-cut diamonds weighing approximately 4.00 carats total, length 7.0cm.

A diamond brooch, circa 1955. The three strands of brilliant and baguette-cut diamonds arranged in the form of a knot and tassel, around a central brilliant-cut diamond, principal diamonds weighing 1.40, 1.26, 1.20 and 0.98 carats, remaining brilliant-cut diamonds weighing approximately 4.50 carats total, baguette-cut diamonds weighing approximately 4.00 carats total, length 7.0cm.

A tourmaline and diamond brooch  The heart-shaped pink tourmaline, within an old brilliant, single and rose-cut diamond ribbon and garland surround, old brilliant and single-cut diamonds approx. 0.30ct total, length 3.9cm, fitted case by Tessier, New Bond Street. Edwardian or Edwardian style or earlier.

A tourmaline and diamond brooch The heart-shaped pink tourmaline, within an old brilliant, single and rose-cut diamond ribbon and garland surround, old brilliant and single-cut diamonds approx. 0.30ct total, length 3.9cm, fitted case by Tessier, New Bond Street. Edwardian or Edwardian style or earlier.

A Ruby and Diamond Brooch, circa 1920. Designed as the letter A, decorated with calibré-cut rubies, old European and rose-cut diamonds, mounted in platinum and 18k gold.

A Ruby and Diamond Brooch, circa 1920. Designed as the letter A, decorated with calibré-cut rubies, old European and rose-cut diamonds, mounted in platinum and 18k gold.

A DIAMOND BROOCH Designed as a baguette-cut diamond ribbon, extending a marquise-cut diamond openwork cascade, mounted in platinum

A DIAMOND BROOCH Designed as a baguette-cut diamond ribbon, extending a marquise-cut diamond openwork cascade, mounted in platinum

A DIAMOND BROOCH The central twin scroll to brilliant and baguette-cut diamond sprays, each line with collet terminal, circa 1960,Brooch - $16,565 at auction

A DIAMOND BROOCH The central twin scroll to brilliant and baguette-cut diamond sprays, each line with collet terminal, circa 1960,Brooch - $16,565 at auction

An Art Deco aquamarine and diamond brooch, the baguette shaped aquamarine is millegrain set between two diamond set flower-head sections within rectangular diamond set border.

An Art Deco aquamarine and diamond brooch, the baguette shaped aquamarine is millegrain set between two diamond set flower-head sections within rectangular diamond set border.

DIAMOND BROOCH, VAN CLEEF & ARPELS of foliage design, set with circular-cut and pear-shaped diamonds together weighing approximately 2.60 carats, mounted in 18 karat white gold.

DIAMOND BROOCH, VAN CLEEF & ARPELS of foliage design, set with circular-cut and pear-shaped diamonds together weighing approximately 2.60 carats, mounted in 18 karat white gold.

Harry Winston Emerald Diamond Brooch | From a unique collection of vintage brooches at http://www.1stdibs.com/jewelry/brooches/brooches/

Harry Winston Emerald Diamond Brooch | From a unique collection of vintage brooches at http://www.1stdibs.com/jewelry/brooches/brooches/

A BELLE EPOQUE RUBY AND DIAMOND BROOCH, CIRCA 1910. Designed as a circle with an…

A BELLE EPOQUE RUBY AND DIAMOND BROOCH, CIRCA 1910. Designed as a circle with an…

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