A SOLITAIRE DIAMOND ENGAGEMENT RING in 18ct yellow gold, set with an old cut diamond of 1.42 carats,

A SOLITAIRE DIAMOND RING in 18ct yellow gold, set with an old cut diamond of 1.13 carats, stamped 18ct, size N.5 / 6.75, 2.8g.

A SOLITAIRE DIAMOND RING in 18ct yellow gold, set with an old cut diamond of approximately 1.43 carats, full British hallmarks for Birmingham 1970, size L / 5.75, 2.4g.

NO RESERVE - A SOLITAIRE DIAMOND GYPSY RING in 18ct yellow gold, set with an old cut diamond of approximately 0.90 carats, stamped 18CT, size R / 8.5, 7.3g.

A DIAMOND SOLITAIRE RING in 18ct yellow gold, set with an old cut diamond of 0.45 carats, obscured British hallmarks for London, 1997, size O / 7, 3.4g.

A SOLITAIRE DIAMOND RING in 18ct yellow gold and platinum, set with an old cut diamond of approximately 0.67 carats, stamped PLAT, size P1/2 / 7.75, 3.2g.

A DIAMOND SOLITAIRE ENGAGEMENT RING in 18ct yellow gold, set with a radiant cut diamond of 5.63 carats, British hallmarks for 18ct gold, size N / 6.5, 7.0g. Accompanied by a facsimile gemmological rep

AN ANTIQUE SOLITAIRE DIAMOND RING, EARLY 20TH CENTURY in 18ct yellow gold, set with an old cut diamond of 0.32 carats, stamped 18c, size N / 6.75, 2.0g.

NO RESERVE - A DIAMOND SOLITAIRE ENGAGEMENT RING in 18ct yellow gold, set with a round brilliant cut diamond of approximately 0.23 carats, full British hallmarks for 18ct gold, size K / 5, 2.8g.

A SOLITAIRE DIAMOND DRESS RING, EARLY 20TH CENTURY in 18ct yellow gold and platinum, set with an old cut diamond of 0.51 carats within a tapering band, stamped 18ct Plat, size K / 5.25, 2.4g.

A SOLITAIRE DIAMOND RING in yellow gold, set with an old cut diamond of approximately 1.06 carats, no assay marks, size R / 8.75, 2.6g.

A DIAMOND GYPSY RING in 18ct yellow gold, set with three old cut diamonds totalling 0.9-1.0 carats, stamped 18ct, size M / 6, 5.8g.

A SOLITAIRE DIAMOND RING in 18ct yellow gold, set with a princess cut diamond of 0.82 carats, full British hallmarks, size L / 6, 2.9g.

AN ANTIQUE DIAMOND GYPSY RING in 18ct yellow gold, set with an old cut diamond of 0.58 carats, British hallmarks for Chester, 1920, size R / 8.5, 4.4g.

A SOLITAIRE DIAMOND RING in 18ct yellow gold, set with a round brilliant cut diamond of 0.50 carats, British hallmarks, size G.5 / 3.75, 2.6g.

AN ANTIQUE VICTORIAN DIAMOND RING in 18ct yellow gold, set with a single old cut diamond of 0.49 carats, with engraved inscription to the inside of the band 'To a true friend from EY', full British ha

A DIAMOND SOLITAIRE RING in 18ct yellow gold, set with a marquise cut diamond of 1.10 carats, full British hallmarks, size N / 7, 3.0g.

AN ANTIQUE VICTORIAN BLUISH GREEN DIAMOND RING, 1862 in 18ct yellow gold, set with an old cut blue diamond of 0.70 carats, full British hallmarks for Birmingham 1862, size N / 6.5, 4.7g. Accompanied b

A SOLITAIRE DIAMOND ENGAGEMENT RING in 18ct white gold, set with a marquise cut diamond of 1.01 carats, British hallmarks for 18ct gold, size M / 6, 3.3g.

SOLITAIRE DIAMOND RING, EARLY 20TH CENTURY in 18ct yellow gold and platinum, set with an old cut diamond, between geometric shoulders, stamped 18ct Plat, size K / 5.25, 2.2g.

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 DRESS RING, MAUBOUSSIN in 18ct yellow gold, set with a principal old cut diamond of 2.44 carats flanked above and below by marquise and round cut diamonds, signed Mauboussin Paris, French as

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

A 1.23 CARAT SOLITAIRE DIAMOND ENGAGEMENT RING in 18ct white gold, set with a round brilliant cut diamond of 1.23 carats accented by further diamonds to the band, stamped 18CT, size R / 8.5, 3.7g.

A SOLITAIRE DIAMOND ENGAGEMENT RING in 18ct white gold, set with a round brilliant cut diamond of 0.67 carats, stamped 750, size O1/2 / 7.25, 3.6g.