An antique diamond necklace. Photo: Christie's Images Ltd. 2011 Of kokoschnik design, the graduated old-cut diamond fringe to the collet line, mounted in silver and gold, circa 1890, 35.0cm long; Estimate £30,000 - £40,000 ($49,050 - $65,400); Price Realized...

An antique rectangular-shaped emerald and diamond brooch, circa 1840 The rectangular-shaped emerald and old-cut diamond cluster centre to the diamond-set foliate surround, later brooch fitting detachable, centre possibly adapted,, 4.7 cm wide. Estimate...

An antique diamond dragonfly brooch, circa 1900 The head and body set with a series of graduated old and rose-cut diamonds to the extending diamond-set wings with collet accents, mounted in platinum and gold, brooch fitting detachable, 8.0 cm wide, with...

An antique diamond and pearl necklace The front composed of nine graduated old-cut diamond openwork panels with natural pearl centres and fringe detail interspersed with pearl and diamond collet bars to the openwork backchain, mounted in silver and gold,...