A PERIDOT AND DIAMOND CLUSTER DRESS RING in platinum, set with an oval cut peridot within a border

AN EMERALD AND DIAMOND CLUSTER DRESS RING set with an oval cut emerald within concentric borders of brilliant cut diamonds and calibre cut emeralds, no assay marks, size M / 6, 5.0g. Guaranteed UK Chr

NO RESERVE - A SAPPHIRE AND DIAMOND CLUSTER RING, EARLY 20TH CENTURY in 18ct yellow gold and platinum, set with an oval cut blue sapphire within a border of single cut diamonds, maker's mark SH&Co, st

AN UNHEATED RUBY AND DIAMOND CLUSTER RING in 18ct yellow gold and platinum, set with an oval cut ruby of 1.42 carats within a border of round cut diamonds, stamped 18ct & Plat, size M / 6, 2.5g. Accom

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 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

AN OPAL AND DIAMOND CLUSTER DRESS RING in yellow gold and silver, set with an oval cabochon opal within a border of old cut diamonds, no assay marks, size N / 6.5, 4.6g.

A MOONSTONE AND DIAMOND CLUSTER DRESS RING in 14ct yellow gold and white gold, set with an oval cabochon moonstone within a border of old cut diamonds, stamped 585, size L / 5.75, 3.4g.

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

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 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,

A RUBY AND DIAMOND CLUSTER DRESS RING in 18ct yellow gold, set with a round cut ruby within a border of round brilliant cut diamonds, full British hallmarks, size L1/2 / 6, 2.7g.

AN AMETHYST AND DIAMOND CLUSTER RING in yellow gold and silver, set with an oval cut amethyst within a border of flat cut diamonds, no assay marks, size P / 7.5, 2.7g.

AN ANTIQUE SAPPHIRE AND DIAMOND CLUSTER RING, EARLY 20TH CENTURY in 18ct yellow gold and platinum, set with an oval cut sapphire within a halo of round cut diamonds, stamped 18ct Plat, size N / 6.5, 2

A CITRINE AND DIAMOND DRESS RING in 18ct yellow gold and silver, set with an oval cut citrine within a border of foliate scroll designs set with four round cut diamonds, French assay marks, size N / 6

A VINTAGE PERIDOT AND DIAMOND CLUSTER RING in 18ct yellow gold, set to the centre with an oval cut peridot to a surround of single cut diamonds, full British hallmarks for Birmingham 1968, size J / 4.

A RUBY AND DIAMOND RING in platinum, set with an oval cut ruby of 0.77 carats, accented by French cut rubies within an openwork border set with single cut diamonds, with further diamonds set to the ta

A BURMA NO HEAT SAPPHIRE AND DIAMOND CLUSTER RING in platinum, set with an oval cabochon sapphire of 7.44 carats in a double border of old cut diamonds, the diamonds all totalling 1.4-1.5 carats, full

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 ring, the oval cut sapphire claw set within a border of fourteen single cut diamonds to a plain tapered shank, size N, stamped '18ct'

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 DIAMOND CLUSTER DRESS RING in 18ct gold, set with a principal old cut diamond of 0.54 carats within a scalloped border of further old cut diamonds, the diamonds all totalling 0.9-1.0 carats, stamped

A 19th century diamond cluster ring, the oval silver mount centred with a bezel-set mixed oval-cut diamond of approximately 0.70 carats, within a border of small old-cut diamonds, the yellow metal sha

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 FINE DIAMOND CLUSTER RING in 18ct yellow gold and platinum, set with a principal old European cut diamond of 0.72 carats within a border of single cut diamonds, stamped 18ct Plat, size N1/2 / 7, 2.7