A platinum diamond dress ring.

A mid 20th century platinum diamond dress ring. The brilliant-cut diamond, with similarly-cut diamond tapered cylindrical sides. Estimated total diamond weight 1.50cts, principal diamond estimated I-J

A PLATINUM, AQUAMARINE AND DIAMOND DRESS RING LONDON 1980The step cut aquamarine with canted corners estimated to weigh 4.75 carats, flanked by a trio of brilliant cut and pear cut diamonds, approxima

TIFFANY & CO. - a platinum sapphire and diamond dress ring. The circular-shape sapphire, with marquise-shape and brilliant-cut diamond stylised petal sides. Signed Tiffany & Co. Estimated total diamon

An early 20th century platinum and 18ct gold diamond dress ring. The three graduated circular-cut diamonds, within a single-cut diamond scalloped millegrain border. Estimated total diamond weight 0.20

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

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

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.

AN ART DECO SAPPHIRE AND DIAMOND DRESS RING in platinum, set with an old cut diamond of approximately 1.50 carats in a double border of step cut sapphires and old cut diamonds, the band accented by fu

A SAPPHIRE AND DIAMOND DRESS RING in platinum, set with an emerald cut diamond of approximately 0.40 carats, accented by French cut sapphires and round brilliant cut diamonds, further round brilliant

A PINK TOURMALINE AND DIAMOND DRESS RING in platinum, set with an oval-shaped fancy cut pink tourmaline of 13.95 carats, the trefoil shoulders and shank accented with round cut diamonds, no assay mark

A BROWN DIAMOND DRESS RING in platinum, set with a round cut brown diamond between two pear cut brown diamonds, in a border of round brilliant cut white diamonds, the diamonds all totalling 1.5-1.7 ca

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

AN ART DECO DIAMOND DRESS RING in platinum, the geometric face set with rows of old cut diamonds, the diamonds all totalling 1.3-1.5 carats, stamped 950, size O / 7, 7.2g.

A SAPPHIRE AND DIAMOND DRESS RING in platinum, set with an oval cut sapphire within two concentric rows of round brilliant cut diamonds, each shoulder set with a trio of round brilliant cut diamonds,

AN EMERALD AND DIAMOND DRESS RING in platinum, set with an emerald cut emerald of 0.37 carats between trios of old cut diamonds, stamped PLAT, size L / 5.75, 2.7g.

EMERALD AND DIAMOND DRESS RING in platinum, set with an emerald cut emerald in a cluster of old cut diamonds, stamped 950, size O / 7, 2.70g.

AN OPAL AND DIAMOND DRESS RING in platinum, set with two cabochon opals and two old cut diamonds, the diamond both totalling 0.4-0.5 carats, stamped PT, size M / 6, 3.6g.

A SOLITAIRE DIAMOND DRESS RING in platinum, set with a round cut diamond within a tapering band, full British hallmarks, size M / 6, 4.1g.

NO RESERVE - AN AMETHYST AND DIAMOND DRESS RING in platinum, set with an oval cut amethyst accented by four round brilliant cut diamonds, stamped PT900, size L1/2 / 6, 4.7g.

DIAMOND DRESS RING IN PLATINUM, of part openwork design, set with a larger central diamond, flanked with smaller diamonds totalling approx. 0.60 ct. Size M 1/2. 4.2 grams.

AQUAMARINE AND DIAMOND DRESS RING, HIRSH in platinum, set with an emerald cut aquamarine of 1.72 carats, accented by two round cut diamonds, signed Hirsh, full British hallmarks, size L / 5.5, 5.4g.

NO RESERVE - AN ART DECO AQUAMARINE AND DIAMOND DRESS RING, Made in platinum, Octagonal step cut aquamarine, weighing approximately 3.62 carats, Single cut diamonds, Stamped Pl and numbered 4902, Size

An early 20th century platinum and 18ct gold coral and diamond dress ring. The replacement oval-shape coral cabochon, within a rose-cut diamond openwork panel surround, to the similarly-set diamond sh

An early to mid 20th century platinum and 18ct gold old-cut diamond floral dress ring.Estimated total diamond weight 1.20cts, H-I colour, SI1-P1 clarity.Ring size O1/2. 3.3gms.