HUGO MADUREIRA, AN AMETRINE 'AYOREO' RING in 18ct yellow gold, the geometric face set with a step

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.

A FRENCH RETRO DIAMOND RING in 18ct yellow gold, the geometric face set with two old cut diamonds, accented by rows of rose cut diamonds, French assay mark, size L / 5.5, 7.9g.

NO RESERVE - AN ANTIQUE VICTORIAN EMERALD AND DIAMOND RING, 1868 in 18ct yellow gold, the face set with five step cut emeralds arranged as a cross, accented by rose cut diamonds, full British hallmark

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 18ct yellow gold and platinum, the circular face set with pattern of step cut sapphires and round cut diamonds, further diamonds accenting the band, stamped 18ct PLAT, s

NO RESERVE - AN ART DECO DIAMOND AND RUBY DRESS RING in 18ct yellow gold, the hexagonal face set with old European brilliant cut diamonds, within a border of step cut rubies, stamped 18, size Q / 8, 2

AN ART DECO RUBY AND DIAMOND DRESS RING, EARLY 20TH CENTURY in 18ct yellow gold and platinum, the rectangular face set with a step cut ruby accented by single cut diamonds, stamped 18ct Plat, size M /

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 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

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,

A VINTAGE SAPPHIRE AND DIAMOND RING in 18ct yellow gold, set with a cabochon sapphire and an old cut diamond of 1.47 carats, accented by further old mine cut diamonds, French assay marks for 18 carat

A DIAMOND CLUSTER RING in 18ct yellow gold, set with a cluster of round brilliant cut diamonds all totalling 3.4-3.6 carats, full British hallmarks for 18ct gold, size N / 7, 6.0g.

A VINTAGE DIAMOND FIVE STONE RING in 18ct yellow gold, set with a graduated row of old cut diamonds all totalling 3.2-3.4 carats, stamped 18CT, size M / 6, 3.7g.

A CHROME TOURMALINE AND DIAMOND RING in 18ct yellow gold, set with a cushion cut chrome green tourmaline of 12.76 carats in a stylised border of round brilliant cut diamonds, partial British hallmarks

A DIAMOND FIVE STONE RING in 18ct yellow gold, set with five graduated old cut diamonds, accented by rose cut diamonds, the diamonds all totalling 2.7-2.9 carats, stamped 18ct, size P / 7.5, 4.2g.

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.

A SAPPHIRE AND DIAMOND RING in 18ct yellow gold, set with a round cabochon sapphire of approximately 7.18 carats, accented by trios of rose cut diamonds, stamped 750, size N / 6.75, 7.1g. 

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

VHERNIER, A ROCK CRYSTAL AND TURQUOISE ALADINO COCKTAIL RING in 18ct yellow gold, set with a slice of turquoise beneath a polished rock crystal dome, signed Vhernier and numbered, stamped 750, size N

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.

A FRENCH SAPPHIRE AND DIAMOND RING in 18ct yellow gold, set with an oval cut sapphire of approximately 3.57 carats accented by old cut diamonds, French assay marks, size J1/2 / 5, 10.6g. 

A VINTAGE CORAL AND DIAMOND RING in 18ct yellow gold, set with an oval cabochon coral within concentric borders of round cut diamonds and pear shaped cabochon coral, stamped 18K, size M / 6.5, 15.5g.

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 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