(180553) A diamond dress ring.

J.ROCA: DIAMOND DRESS RING The brilliant-cut diamond, weighing 10.80 carats, the mount of foliate design, set with single-cut diamonds, the bifurcated shoulders set with single-cut diamonds, signed J.

TIFFANY & CO., JEAN SCHLUMBERGER, A STAR SAPPHIRE AND DIAMOND DRESS RING The oval cabochon star sapphire estimated to weigh between 55 to 60 carats, to crossover pavé set diamond leaf shoulders, ap

J.ROCA: DIAMOND DRESS RING The brilliant-cut diamond, weighing 6.66 carats, the mount set with calibré-cut emeralds, single and rose-cut diamonds, the similarly-set trifurcated shoulders and gall

A FINE 'TOI ET MOI' DIAMOND DRESS RING Each brilliant-cut diamond weighing 1.69ct and 1.81ct within an eight-claw setting to a plain hoop, mounted in 18K gold, with maker's mark, French assay mark, ri

DIAMOND DRESS RING The brilliant-cut diamond of yellow tint, within a bombé surround pavé-set with brilliant-cut diamonds, diamond untested for origin and natural colour, principal diamond a

A SAPPHIRE AND DIAMOND DRESS RING The central cushion-shaped sapphire weighing 5.59cts within a four-claw setting and between half-moon-shaped diamond shoulders, mounted in 18K gold, diamonds approxim

GRIMA: BOULDER OPAL AND DIAMOND DRESS RING, 1977 The oval boulder opal in a pierced mount of textured wire with brilliant-cut diamond accents, mounted in 18 carat gold, signed Grima, workshop mark HJC

GUBELIN, A DIAMOND DRESS RING in 18ct gold, set to the centre with a round brilliant cut diamond of approximaetly 3.00 carats, the tapering band further set with round brilliant cut diamonds, Gubelin

A FANCY COLOUR DIAMOND DRESS RING in 18ct white gold, set with a cushion cut blue diamond of 1.01 carats in a border of round brilliant cut pink diamonds, and a cushion cut yellow diamond of 1.26 cara

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

AN ART DECO SAPPHIRE AND DIAMOND DRESS RING in platinum, set with an emerald cut blue sapphire of 5.88 carats, between stepped shoulders set with baguette cut diamonds, stamped Platinum, size N / 6.75

A DIAMOND DRESS RING The pear-shaped diamond of yellow tint in a rubover setting, within a surround of brilliant-cut diamonds and between similarly-set shoulders, with openwork scrolled gallery and en

AN ART DECO DIAMOND DRESS RING in platinum, the geometric face set with two old cut diamonds of approximately 1.15 and 1.04 carats, accented by rose cut diamonds, French import mark, size Q / 8.25, 5g

A BURMA NO HEAT RUBY AND DIAMOND DRESS RING in 18ct white gold, set with a cushion cut ruby of 1.02 carats and a cushion cut diamond, within concentric borders of round cut diamonds and round cut rubi

EMERALD AND DIAMOND DRESS RING The step-cut emerald within a baguette-cut diamond-set mount, one diamond deficient, diamonds approx. 3.50cts total, ring size approx. M For further information on this

A DIAMOND DRESS RING in 18ct yellow and white gold, set with an emerald cut diamond of 1.66 carats within a border of round cut and tapering baguette cut diamonds, the diamonds all totalling 2.9-3.1 c

AN ART DECO DIAMOND DRESS RING in platinum, set with an old cut diamond of 2.20 carats, between pairs of old cut diamonds, French assay marks for platinum, size L / 5.5, 5.8g.

A CEYLON NO HEAT SAPPHIRE AND DIAMOND DRESS RING set with a cushion cut blue sapphire of 4.10 carats, within a rectangular border set with old cut and baguette cut diamonds, the diamonds all totalling

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

JADE AND DIAMOND DRESS RING The oval jade cabochon, weighing 8.45 carats, within a surround of marquise-cut and pear-shaped diamonds, the shoulders set with tapered baguette and brilliant-cut diamonds

SAPPHIRE AND DIAMOND DRESS RING The sugarloaf sapphire weighing 7.09 carats, between baguette-cut diamond shoulders, in a bombé mount, pavé-set with brilliant-cut diamonds, diamonds approx.

ALDO CIPULLO FOR CARTIER, A VINTAGE DIAMOND DRESS RING, 1971 in 18ct yellow gold, designed as a series of mallion links, accented by four round brilliant cut diamonds, stamped 18K, signed Cartier Aldo

A sapphire and diamond dress ring. The oval sapphire cabochon, to the single-cut diamond bark effect shoulders and similarly designed tapered band. Estimated total diamond weight 0.15ct. Weight 9.9gms

A DIAMOND DRESS RING in yellow and white gold, the tapering band set with twelve graduated old cut and rose cut diamonds, the diamonds all totalling 3.6-3.8 carats, unmarked, size P / 7.75, 8.6g.