A DIAMOND AND SAPPHIRE DRESS RING in platinum, set with a round cut diamond in a border of

A SAPPHIRE AND DIAMOND DRESS RING, CIRCA 1940 in 18ct yellow gold and platinum, set with a step cut blue sapphire within a border of round cut diamonds, stamped 18ct Pt, size K / 5.25, 3.9g.

A SAPPHIRE AND DIAMOND CLUSTER DRESS RING in 18ct yellow gold and platinum, set with a round cabochon blue sapphire of 0.97 carats within a border of old cut diamonds, stamped 18ct Plat, size L1/2 / 6

A BROWN DIAMOND DRESS RING in platinum, set with a round cut brown diamond between two pear cut brown diamonds, in a border of round brilliant cut white diamonds, the diamonds all totalling 1.5-1.7 ca

A SAPPHIRE AND DIAMOND DRESS RING in platinum, set with an emerald cut diamond of approximately 0.40 carats, accented by French cut sapphires and round brilliant cut diamonds, further round brilliant

A SAPPHIRE AND DIAMOND DRESS RING in platinum, set with an oval cut sapphire within two concentric rows of round brilliant cut diamonds, each shoulder set with a trio of round brilliant cut diamonds,

AN ART DECO SAPPHIRE AND DIAMOND DRESS RING in platinum, set with an old cut diamond of approximately 1.50 carats in a double border of step cut sapphires and old cut diamonds, the band accented by fu

A SAPPHIRE AND DIAMOND RING in platinum, set with a pear cut sapphire in a border of round cut diamonds, with further diamonds to the band, engraved 'all my love', stamped PT 950, size I / 4.5, 7.5g.

AN ART DECO DIAMOND AND SAPPHIRE DRESS RING in yellow gold and platinum, of target design, set with a cluster of old European cut diamonds, within a border of calibre cut blue sapphires, with further

A RUBY, SAPPHIRE AND DIAMOND DRESS RING in yellow gold, set with a triangular cut ruby and blue sapphire, within borders of round cut diamonds, no assay marks, size U / 10, 10.6g.

A SAPPHIRE AND DIAMOND CLUSTER RING in platinum, set with a round cut sapphire of 2.66 carats, surrounded by a border of round brilliant cut diamonds, stamped PT 950, size N1/2 / 6.75, 5.1g.

A CEYLON NO HEAT SAPPHIRE AND DIAMOND RING in platinum and 18ct white gold, set with a cushion cut blue sapphire of 4.17 carats, within a border of round cut diamonds, the diamonds all totalling 2.2-2

PINK SAPPHIRE AND DIAMOND DRESS RING in 18ct yellow gold, set with a round cut pink sapphire of 0.97 carats, within a border of round cut diamonds, with further diamonds set to the shoulders, stamped

A SAPPHIRE AND DIAMOND DRESS RING in 18ct white gold, set with two rows of pear cut sapphires accented by a border of round brilliant cut diamonds, British hallmarks for 18ct gold, size L / 5.5, 6.4g.

A SAPPHIRE AND DIAMOND CLUSTER RING in 18ct yellow gold and platinum, set with an oval cut blue sapphire of 1.36 carats within a border of round cut diamonds, with further diamonds set to the shoulder

A SAPPHIRE AND DIAMOND RING in platinum, set with an oval cut sapphire of 5.75 carats, in a border of round brilliant and baguette cut diamonds totalling 1.96 carats, stamped Pt900, size M / 6, 14.0g.

AN ANTIQUE STAR SAPPHIRE AND DIAMOND DRESS RING in 18ct yellow gold and silver, set with a round cabochon star sapphire of 9.63 carats within a border of round cut diamonds, unmarked, size N / 6.5, 9.

A MOONSTONE AND DIAMOND DRESS RING in 18ct yellow gold and platinum, the navette shaped face set with a cabochon moonstone in a border of round brilliant cut diamonds, the diamonds all totalling 0.6-0

AN ART DECO SAPPHIRE AND DIAMOND DRESS RING in 18ct yellow gold and platinum, set with a cushion cut blue sapphire of 0.93 carats, within a border of old cut diamonds, stamped Pt 18ct, size M / 6, 3.1

A SAPPHIRE AND DIAMOND DRESS RING in 18ct yellow gold, set with a trio of cushion and round cut blue sapphires within borders of old cut diamonds, stamped 18ct, size L / 5.75, 3.7g.

AN ANTIQUE SAPPHIRE AND DIAMOND DRESS RING in 18ct yellow gold, set with an oval cut sapphire of approximately 1.70 carats in a border of round brilliant, old and single cut diamonds, the stepped shou

AN UNHEATED SAPPHIRE, DIAMOND AND ENAMEL DRESS in platinum, set to the centre with an unheated Madagascan octagonal step cut sapphire of 1.30 carats in a border of black enamel and round brilliant cut

AN UNHEATED VIOLET SAPPHIRE AND DIAMOND DRESS RING in 18ct white gold, set with a central oval cut violet sapphire of 2.02 carats, within a navette border set with clusters of marquise and round brill

A SOLITAIRE DIAMOND DRESS RING in platinum, set with a round cut diamond within a tapering band, full British hallmarks, size M / 6, 4.1g.

A 1.50 CARAT DIAMOND DRESS RING, CARTIER in white gold or platinum, set with round cut diamonds totalling approximately 1.50 carats, signed Cartier, size O / 7, 4.4g.