A DIAMOND AND SAPPHIRE TARGET RING set with a round cut diamond of 1.01 carats within a border of

A BURMA NO HEAT SAPPHIRE AND DIAMOND RING set with a cushion cut blue sapphire of 4.18 carats, within a graduated border of old cut and round cut diamonds, no assay marks, size N / 6.75, 4.0g. Accompa

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 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

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 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 18ct white gold, diamond, and ruby ring, in a target style, centred with a round brilliant-cut diamond of approximately 0.70 carats, within a six-pointed star border calibre-set with mixed-cut ribi

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 RUBY AND DIAMOND TARGET RING set with an old cut diamond of 2.01 carats, within a square border set with step cut rubies, no assay marks, size J / 4.5, 2.8g.

A DIAMOND AND SAPPHIRE TARGET RING in 18ct white gold, set with a round brilliant cut diamond in a concentric border of calibre cut sapphires and round brilliant cut diamonds, stamped 18K, size M1/2 /

A BROWN DIAMOND DRESS RING in 18ct gold, set with a round brilliant cut diamond of 2.07 carats, within a border of round brilliant cut diamonds, the split band set with further diamonds, all totalling

A SAPPHIRE AND DIAMOND TARGET RING set with an old cushion cut diamond of 0.55 carats, in a border of calibre cut sapphires, the shoulders accented with single cut diamonds, no assay marks, size N / 6

A SAPPHIRE AND DIAMOND RING in Art Deco design, set with a round cut diamond of 0.71 carats in a geometric border set with fancy cut sapphires and round cut diamonds, no assay marks, size N / 6.5, 3.0

An early to mid 20th century yellow metal, diamond, and pink sapphire ring, set with a mixed marquise-cut sapphire within a border of round-cut diamonds, ring cluster approximately 11 x 8 mm, indistin

A BURMA NO HEAT SAPPHIRE AND DIAMOND RING set with a cushion cut sapphire of 4.40 carats within a cluster of round cut diamonds, no assay marks, size M / 6, 6.3g. Accompanied by two gemmological repor

NO RESERVE - AN UNHEATED RUBY AND DIAMOND RING set with a central round cut ruby of 2.32 carats, within a border of round brilliant cut diamonds, to a bifurcated band, no assay marks, size R / 8.5, 5.

AN AQUAMARINE AND DIAMOND RING the square face set with a step cut aquamarine of 1.24 carats within a border of round cut diamonds, no assay marks, size M / 6, 3.8g.

A platinum, diamond, and emerald ring, set with a mixed oval-cut emerald of approximately 1.25 carats, within a millegrain border of round brilliant-cut diamonds and two baguette-cut diamonds, total d

A TANZANITE, RUBY AND DIAMOND RING in 18ct white gold, set with an oval cabochon tanzanite of 20.78 carats, within a border of round cut diamonds, accented by round cut rubies to the shoulders, stampe

A 14ct yellow gold and yellow diamond halo ring set with a cushion-cut natural fancy intense yellow diamond of 0.92 carats, SI2 clarity, within a halo border of round brilliant-cut diamonds, with diam

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 CEYLON NO HEAT SAPPHIRE AND DIAMOND RING set with a cushion cut blue sapphire of 6.12 carats, within a border of single cut diamonds, no assay marks, size N / 6.75, 5.4g. Accompanied by a gemmologic

A COLOMBIAN EMERALD AND DIAMOND RING set with an emerald cut emerald of 1.22 carats within geometric border of round cut diamonds all totalling 0.8-0.9 carats, no assay marks, size M / 6, 6.0g.

AN AQUAMARINE AND DIAMOND RING in 18ct white gold, set with a step cut aquamarine of 2.31 carats within an abstract border pave set with round brilliant cut diamonds, the diamonds all totalling 2.8-3.