A DIAMOND CLUSTER DRESS RING in 18ct gold, set with a principal old cut diamond of 0.54 carats

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 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 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

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.

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 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.

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 PEARL AND DIAMOND CLUSTER DRESS RING in 18ct yellow gold, set with a pearl of 5.1mm, within a border of old cut diamonds, no assay marks, size N / 6.5, 2.9g.

AN ANTIQUE DIAMOND CLUSTER RING in 18ct yellow gold, set with a cluster of old cut diamonds totalling 0.73 carats, stamped 18, size J / 4, 2.7g.

A DIAMOND CLUSTER RING in 18ct gold and platinum, set with an old cut diamond in a cluster of further diamonds totalling 1.10 carats, stamped PLAT 18CT, size K / 5, 2.9g.

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 DIAMOND CLUSTER RING in 18ct yellow gold, set with an antique cushion cut diamond of 1.51 carats in a cluster of old cut diamonds totalling 1.4-1.6 carats, the diamonds all totalling 2.9-3.1 carats,

AN EMERALD AND DIAMOND CLUSTER RING in 18ct yellow gold, set with a cushion cut emerald of 3.65 carats in a cluster of old cut diamonds totalling 1.8-2.0 carats, stamped 18ct, size O / 7, 7.4g.

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

AN ANTIQUE VICTORIAN DIAMOND AND RUBY DRESS RING, 1897 in 18ct yellow gold, set with a trio of graduated old cut diamonds, the largest of 0.38 carats, punctuated by two cushion cut rubies, and accente

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.

AN AQUAMARINE AND DIAMOND CLUSTER RING in 18ct yellow gold, set with an oval cut aquamarine of 4.68 carats in a border of old cut diamonds, the diamonds all totalling 1.7-1.9 carats, stamped 18ct, siz

AN ANTIQUE PINK SPINEL AND DIAMOND CLUSTER RING in 18ct yellow gold, set with a round cut spinel of approximately 0.91 carats in a cluster of old cut diamonds, partial British hallmarks for London 192

A SAPPHIRE AND DIAMOND CLUSTER RING in 18ct yellow gold, set with an oval cut sapphire of 1.53 carats in a cluster of old cut diamonds, each shoulder set with a further old cut diamond, the diamonds a

A RUBY AND DIAMOND CLUSTER RING in 18ct yellow gold, set with an oval cut ruby of approximately 1.03 carats in a cluster of old cut diamonds, stamped 18ct, size L1/2 / 6, 2.9g.

AN ANTIQUE DIAMOND DRESS RING, 19TH CENTURY in 18ct yellow gold, set with two rows of graduated old cut diamonds, the diamonds all totalling 1.3-1.5 carats, stamped 18c, size L / 5.75, 5.8g.

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 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