A DIAMOND NAVETTE RING in yellow gold, the navette face set throughout with round cut diamonds all

A SAPPHIRE AND DIAMOND RING in 18ct yellow gold, the navette face set with an oval cut sapphire of 2.20 carats in a border of round cut diamonds, the diamonds all totalling 0.5-0.7 carats, British hal

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

A DIAMOND DRESS RING, CIRCA 1940 in 14ct yellow gold, the navette face with three principle round cut diamonds accented by scrolling details set with further rose cut diamonds, stamped 585, size N / 6

An 18ct yellow gold and diamond ring the navette-shaped mount pave-set with round brilliant-cut diamonds, size P, 2.8 grams.

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 RUBY AND DIAMOND RING in yellow gold, the navette face set with an oval cut ruby of 0.52 carats in a border of rose cut diamonds, no assay marks, size N / 6.5, 3.7g.

AN ART DECO EMERALD AND DIAMOND RING in platinum or white gold, the navette face set with an oval cut emerald between round cut diamonds, accented by calibre cut emeralds, marked indistinctly, size N

AN ANTIQUE DIAMOND RING, 19TH CENTURY AND LATER, in yellow gold and silver, the navette shaped face set with rose cut diamonds, no assay marks, size G / 3.25, 4.3g.  Guaranteed UK Mainland Christ

AN ANTIQUE CEYLON NO HEAT SAPPHIRE AND DIAMOND RING in 18ct yellow gold, the navette shaped face set with a cushion cut blue sapphire of 1.18 carats, within a surround of old European brilliant cut di

A SAPPHIRE AND DIAMOND RING, CIRCA 1930 in yellow gold, the navette face set with a step cut sapphire in a cluster of old cut diamonds, no assay marks, size N / 6.5, 3.2g.

AN ANTIQUE SAPPHIRE AND DIAMOND DRESS RING, CIRCA 1900 in yellow gold and silver, the navette face set with a cushion cut blue sapphire accented by rose cut diamonds, with pierced decoration to the sh

NO RESERVE - AN ANTIQUE VICTORIAN RUBY AND DIAMOND RING, 1899 in 18ct yellow gold, the navette shaped face set with a trio of graduated cushion cut rubies, within a border of old cut diamonds, maker's

14K yellow gold cluster cocktail ring featuring full cut round and baguette diamonds, bead set in navette design, sz 7, 9 grams tw

RUBY, DIAMOND AND ENAMEL RING in high carat yellow gold and silver, set with an oval cut ruby of 0.70 carats within a navette face jewelled with diamonds and white enamel, unmarked, size M / 6.5, 5.4g

A SAPPHIRE AND DIAMOND RING the navette face set with round cut diamonds accented by step cut sapphires, no assay marks, size N / 6.5, 4.6g.

CHAUMET, A DIAMOND RING in 18ct yellow gold, the bombe face set with clusters of round brilliant cut diamonds, signed Chaumet Paris and numbered, stamped 750, size K1/2 / 5.5, 9.8g.

AN 18 CARAT GOLD DIAMOND NAVETTE RING, pavé-set with round brilliant-cut diamonds, to tapering shoulders, total estimated diamond weight 0.60 carat approximately, hallmarked with sponsor's mark 'TH

A FRENCH DIAMOND AND ENAMEL BOMBE RING in 18ct yellow gold, the domed face set with round brilliant cut diamonds with black enamel details, the diamonds totalling 0.9-1.1 carats, French assay marks, s

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.

A TOPAZ AND DIAMOND RING in yellow gold, the rectangular face set with a step cut topaz, accented by round cut diamonds, British hallmarks, size P / 7.5, 2.9g.

A SAPPHIRE AND DIAMOND RING in 18ct yellow gold and platinum, the circular face set with step cut sapphires and round cut diamonds, further diamonds accenting the band, stamped 18ct PLAT, size N / 7,

A SAPPHIRE AND DIAMOND RING in 9ct yellow gold, the scrolling face set with two round cut sapphires accented by round cut diamonds, full British hallmarks, size O / 7, 3.4g.

A VINTAGE EMERALD AND DIAMOND RING in 18ct yellow gold, the elliptical face set with a row of alternating round cut emeralds and round brilliant cut diamonds, British hallmarks for London, 1972, size

AN ANTIQUE ART DECO DIAMOND AND EMERALD CLUSTER RING in high carat yellow gold, the circular face set with a cluster of round cut diamonds encircled by calibre cut emeralds, unmarked, size J / 5, 2.8g