A diamond dress ring. The off-centre alternating

AN ONYX AND DIAMOND DRESS RING The onyx stripes alternating with rows of brilliant-cut diamonds, each side terminating in a similarly-set plaque with calibré-cut diamond highlights, mounted in 18

BLUE ZIRCON AND DIAMOND DRESS RING, set to the centre with an oval cut blue zircon of approx. 5.76 ct. The further openwork head set with diamonds. Size L 1/2. 6.7 grams.

A diamond dress ring. Designed as three alternating brilliant and marquise-shape diamond lines, to the plain band. Estimated total diamond weight 1.45cts. Weight 7gms.

An Edwardian 18ct gold diamond and synthetic ruby dress ring. The alternating circular-shape synthetic ruby and old-cut diamond line, with scrolling shoulders. Hallmarks for Birmingham, 1901. Ring siz

A mid 20th century 18ct gold ruby and diamond dress ring. The oval-shape panel, with alternating lines of old-cut diamonds and circular-shape rubies, Estimated total diamond weight 0.30ct. Ring size Q

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 SAPPHIRE AND DIAMOND DRESS RING the hexagonal face set to the centre with a round brilliant cut diamond, accented by further diamonds and calibre cut sapphires, no assay marks, size N / 6, 7.4g.

A TURQUOISE AND DIAMOND DRESS RING Set with an oval-shaped turquoise cabochon at the centre, within a surround of brilliant-cut diamonds, mounted in gold, diamonds approximately 2.70ct total, ring siz

An 18ct gold ruby and diamond dress ring. Of hexagonal design, the brilliant-cut diamond, with alternating single-cut diamond and calibre-cut ruby surrounds. Principal diamond estimated 1ct, K-L colou

A FRENCH ART DECO DIAMOND DRESS RING in platinum, the navette shaped face set to the centre with an old mine cut diamond of 0.70 carats between two old mine cut diamonds, accented by further rose cut

GEM-SET AND DIAMOND DRESS RING Designed as two opposing flowerheads set with pear-shaped aquamarine, garnet, peridot, citrine and amethyst, the centre and shoulders set with brilliant-cut diamonds, ri

An early 20th century 18ct gold diamond dress ring. The old-cut diamond quatrefoil, with rose-cut diamond centre and sides. Estimated total old-cut diamond weight 0.70ct, I-J colour, SI clarity. Ring

A 1920s 18ct gold ruby and diamond dress ring. The circular-shape ruby and rose-cut diamond alternating line, with tapered shoulders. Hallmarks for Birmingham, 1921. Ring size N1/2. Weight 2.8gms. Ove

SMOKY QUARTZ AND DIAMOND-SET DRESS RING The rectangular step-cut smoky quartz, with a brilliant-cut diamond quatrefoil to the centre, and similarly set claws, ring size approx. K½

Two late 19th century gold diamond and gem-set dress rings. The first designed as an alternating sapphire and diamond line with scalloped sides, the second designed as an diamond and ruby three-stone

Two early 20th century 18ct gold diamond and sapphire dress rings. To include a graduated oval-shape sapphire three-stone ring with diamond point double spacers, together with an alternating circular-

A ruby dress ring. The oval ruby cabochon, within an alternating circular ruby cabochon and single-cut diamond surround, to the raised motif shoulders and tapered band. Ring size N 1/2. Weight 18.3gms

A multi gem set dress ring, set with three flower head clusters of pear shaped sapphires, yellow sapphires and rubies with circular cut emerald and brilliant cut diamond centres, amongst trailing bord

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