A DIAMOND AND EMERALD RING in 18ct white gold, the geometric face set with a central old cut diamond

A DIAMOND AND EMERALD RING in 18ct white gold, the geometric face set with a central old cut diamond of 0.60 carats accented by baguette cut emeralds and single cut diamonds, stamped 750, size N / 6.5

A FRENCH RETRO DIAMOND RING in 18ct yellow gold, the geometric face set with two old cut diamonds, accented by rows of rose cut diamonds, French assay mark, size L / 5.5, 7.9g.

A DIAMOND CLUSTER RING in 18ct yellow gold, the geometric face set with a cluster of old cut diamonds all totalling 1.0-1.2 carats, stamped 750, size M / 6.25, 5.3g.

A PEARL AND DIAMOND RING in 14ct yellow gold and white gold, the rectangular face set with a central pearl and two principal old cut diamonds, within a border of old cut diamonds, the diamonds all tot

AN ANTIQUE EMERALD AND DIAMOND RING in 18ct yellow gold, the face set alternately with emerald cut emeralds and old cut diamonds, stamped 18ct, size N / 6.75, 3.2g.

AN EMERALD AND DIAMOND RING in 18ct white gold, in foliate design, set with a step cut emerald of 0.40 carats and old cut diamond of 0.50 carats, accented by further rose cut diamonds, stamped 750, si

A diamond, emerald and eighteen karat white gold ringfeaturing an old mine-cut diamond, weighing approximately 0.75 carat, within geometric mount, set with round brilliant-cut diamonds and emerald bul

A DIAMOND RING in 18ct white gold, set with an old cut diamond of 0.40 carats, the band half set with round brilliant cut diamonds, partial British hallmarks, size M / 6, 4.8g.

NO RESERVE - A DIAMOND GYPSY RING in 18ct white gold, set with an old cut diamond, no assay marks, size T / 9.75, 4.5g.

A SOLITAIRE DIAMOND DRESS RING in 18ct white gold, set with an old cut diamond of 0.43 carats, unmarked, size N / 6.5, 3.5g.

A DIAMOND CLUSTER RING in 18ct white gold, set with an old European cut diamond of 1.00 carats, in a border of single cut diamonds, stamped 750, size Q / 8, 3.2g.

NO RESERVE - A DIAMOND RING in 18ct yellow and white gold, set with three old cut diamonds in trefoil formation, all totalling 0.6-0.8 carats, stamped 18K 750, size N1/2 / 7, 3.8g.

A DIAMOND THREE STONE RING in 18ct white gold, set with three old cut diamonds all totalling 0.6-0.7 carats, British hallmarks, size M / 6, 3.3g.

A DIAMOND CLUSTER DRESS RING in 18ct yellow gold, set with a central old cut diamond of 0.91 carats, within a border of further old cut diamonds, all totalling 2.5-2.7 carats, marked indistinctly, siz

NO RESERVE - AN ANTIQUE DIAMOND DRESS RING in 18ct yellow gold, the navette shaped face set with old cut diamonds, the diamonds all totalling 1.9-2.1 carats, partially obscured marks probably British

A ROCK CRYSTAL AND DIAMOND RING in 18ct white gold, set with an etched rock crystal with an applied old cut diamond, inscribed 'Tousa', stamped 18, size M / 6.25, 3.8g.

AN ANTIQUE DIAMOND CLUSTER DRESS RING in 18ct yellow gold and silver, set with a central old cut diamond of 0.42 carats within concentric borders of old cut diamonds, the diamonds all totalling 2.1-2.

BOUCHERON, AN EXCEPTIONAL ANTIQUE ART DECO DIAMOND AND ENAMEL BROOCH in platinum and 18ct white gold, the geometric body set with old cut diamonds within two octagonal borders of black enamel, the pri

AN ANTIQUE DIAMOND AND EMERALD DRESS RING in high carat yellow gold, set with a central old mine cut diamond of 1.66 carats, between two emerald cut emeralds totalling 0.78 carats, unmarked, size N /

AN ANTIQUE DIAMOND MARQUISE RING in 18ct yellow gold and silver, the marquise face pave set with old cut diamonds, stamped 18ct, size S / 9, 3.6g.

AN ART DECO SAPPHIRE AND DIAMOND RING in 18ct yellow and white gold, set with a square step cut sapphire within a border of old cut diamonds, stamped 18ct, 2060, size P / 7.75, 2.4g.

A FINE DIAMOND DRESS RING in 18ct yellow gold and platinum, the stylised openwork face set throughout with old cut diamonds, no assay marks, size J1/2 / 5, 3.6g.

NO RESERVE - AN ART DECO DIAMOND AND RUBY DRESS RING in 18ct yellow gold, the hexagonal face set with old European brilliant cut diamonds, within a border of step cut rubies, stamped 18, size Q / 8, 2

AN ART DECO DIAMOND AND SAPPHIRE RING in yellow gold, of target design, the face set with a central old cut diamond within a border of calibre cut sapphires and a further border of single cut diamonds