gemstone

An aquamarine and diamond bracelet, the graduated row of step-cut aquamarines with brilliant-cut diamond-set spacers between, stamped ‘PT950’, len...

An early 20th century diamond naval crown brooch, set throughout with single-cut diamonds, cased by The Goldsmiths & Silversmiths Company Ltd., le...

An amethyst dress ring, the rectangular step-cut amethyst claw-set between tapering stylised foliate shoulders, ring size K. £400-£600 --- ...

A pearl and diamond three stone ring, the bouton-shaped pearl between two old brilliant-cut diamonds, stamped ‘18ct’, (pearl untested), total diam...

A cultured pearl and jade dress ring, of crossover design, set with two baroque-shaped cultured pearls between pear-shaped jade cabochon shoulders...

A diamond ring, the tapered band channel-set to the front with brilliant-cut diamonds, Portuguese assay mark, total diamond weight approximately 0...

An aquamarine and diamond dress ring, the oval-cut aquamarine set between bifurcated diamond-set shoulders, mounted in 9ct gold, UK hallmark, ring...

A gem-set dress ring, the step-cut citrine within a surround of circular-cut sapphires and brilliant-cut diamonds, between similarly-set diamond s...

An emerald dress ring, of textured bombé form, collet-set throughout with step-cut emeralds, stamped ‘18K’, ring size N. £300-£400 --- Cond...

A diamond cluster ring, set throughout with brilliant-cut diamonds, stamped ‘18CT’, total diamond weight approximately 4.50 carats, ring size M-N....

Two dress rings by Naohiko Noguchi and Solange Azagury-Partridge, the first modelled as the word ‘loving’ and set with a diamond highlight, signed...

A diamond flowerhead cluster ring, French, set with old brilliant and brilliant-cut diamonds, between trifurcated shoulders, French assay marks, m...

A collection of jewellery, comprising an early 19th century pink topaz brooch, in foiled and closed-back gold settings, two gold brooches, circa 1...

A collection jewellery, to include a carved pink bead and cultured pearl necklace, a knot dress ring and earring, a 19th century long gilt chain, ...

A necklace and bracelet suite, of woven fancy-link design, the terminals decorated with bead and wirework detailing and set with ruby, emerald and...

A diamond ring, the bicoloured band with a cartouche motif to the front, pavé-set with brilliant-cut diamonds, stamped ‘750’, ring size O. £200-£...

A golden topaz and diamond cluster ring, converted from a 19th century jewel, the mixed-cut topaz claw set within a surround of old brilliant-cut ...

A ruby, emerald and diamond bracelet by Boucheron, designed as three rows of curved fancy-shaped links set with brilliant-cut diamonds and spaced ...

An 18ct gold sapphire and diamond cluster ring, the oval mixed-cut sapphire claw-set within a surround of brilliant-cut diamonds, European convent...

A coral and gem-set ring and ear clip suite, the ring set with a Corallium Rubrum cabochon claw-set within a whorl surround of calibré-cut onyx sp...

A diamond whorl ring, the central brilliant-cut diamond, weighing 2.35 carats, claw set within a three row scroll surround of similarly-cut diamon...

A mid 20th century diamond dress ring, the lozenge-shaped brilliant-cut diamond cluster to a bombé tapered band with reeded finish, stamped ‘14KP’...

A late 19th century gem-set rock crystal pendant, the circular polished rock crystal pendant applied with a star-shaped cluster of old brilliant a...

A ruby and diamond cluster ring, the pear-shaped ruby set within a brilliant-cut diamond surround between vari-cut diamond shoulders, mounted in 1...

A late 19th century sapphire and diamond bangle, set to the front with a sapphire and old brilliant-cut diamond cluster between a series of gradua...

An Art Deco ruby and diamond target ring, the transitional-cut diamond set within a surround of calibré-cut rubies, to diamond-set shoulders, moun...

An aquamarine and diamond cluster ring, the oval-cut aquamarine set within a surround of old brilliant-cut diamonds, total diamond weight approxim...

A 19th century gem-set jardinière brooch/pendant, the baluster vase supporting flowers and foliage, set throughout with old brilliant and rose-cut...

An Art Deco diamond bracelet, set with a marquise-shaped diamond with graduated baguette-cut diamonds to either side, with calibré-cut emerald hig...

A 19th century jet and shell cameo necklace, the oval shell cameo carved to depict the gorgon Medusa in profile, with wings in her hair and serpen...

A cultured pearl and diamond ring by Mikimoto, the cultured pearl, measuring approximately 10mm, to a pierced stylised mount millegrain-set with s...

An 18ct gold emerald and diamond cluster ring, the octagonal mixed-cut emerald claw-set within a surround of brilliant-cut diamonds, London hallma...

A pair of coral and diamond ear clips, each cabochon above a brilliant-cut diamond set bow, with textured finish, stamped ‘14k 585’, length 20mm. ...

A late 19th century sapphire and diamond five stone ring, alternately set with circular-set sapphires and old brilliant-cut diamonds, the gallery ...

A sapphire and diamond ring, of crossover design, each side terminating in a flowerhead set with circular-cut sapphires and brilliant-cut diamonds...

A ruby and diamond pendant and a pair of gem-set earrings, the pierced cartouche pendant set with an oval mixed-cut ruby within a surround of bril...

An 18ct white gold and diamond pendant, the tapered pendant of bombé form and set to the front with brilliant-cut diamonds, suspended by a fancy-l...

An aquamarine, sapphire and diamond pendant by Fei Liu, the step-cut aquamarine within a border of brilliant-cut diamonds, with trefoils of circul...

An early 20th century gem-set lapel watch, French, of pear-shaped form, the dial with Arabic numerals, the front applied with onyx panel and decor...

A Sri Lankan yellow sapphire and diamond ring, the cushion-shaped sapphire claw-set between transitional-cut diamond trefoils in millegrain collet...

A star sapphire and diamond cluster ring, the sugarloaf star sapphire set within a surround of single-cut diamonds, mounted in 18ct gold, later Lo...

A pair of late 19th century diamond ear pendants, each set with an old brilliant-cut diamond within a pierced star surround set with vari-cut diam...

An emerald and diamond cluster ring, the step-cut emerald claw-set within a surround of brilliant-cut diamonds, to similarly-set bifurcated should...

A diamond ring, the pear-cut diamond of pink tint, weighing 0.70 carat, claw-set between two tapered baguette-cut diamonds, to a plain polished ba...

A black opal and diamond cluster ring, the opal cabochon claw-set within a surround of brilliant-cut diamonds, the shank stamped ‘18ct’, total dia...

A coloured diamond and diamond ring, of crossover design, each side terminating in a brilliant-cut diamond of yellow or brown tint, between should...

A citrine and diamond set heart pendant, the heart-shaped citrine below a brilliant-cut diamond surmount and similarly-set detachable bale, mounte...

An emerald and diamond three stone ring, the step-cut emerald between two old brilliant-cut diamonds, stamped ‘18’, total diamond weight approxima...

An antique gem-set portrait miniature, the glazed miniature depicting a bust length portrait of a lady in late 18th century dress, mounted in gold...

A sapphire and diamond ring, French, the bicoloured band of tapered design, set to the front with an oval-cut sapphire and brilliant-cut diamonds ...

Two gem-set rings, comprising an 18ct gold dress ring set with an oval-cut amethyst within a brilliant-cut diamond surround with step-cut peridot ...

A diamond dress ring, set with a graduated row of brilliant-cut diamonds, the openwork mount of scroll design and with ropetwist detailing, total ...

An emerald and diamond ring, the tapered band channel-set with a series of brilliant-cut diamonds and centred with an emerald cabochon, stamped ‘7...

A Fancy Yellow diamond ring, the cut-cornered Fancy Yellow diamond, weighing 4.13 carats, between shoulders set with brilliant-cut diamonds, mount...

A ruby and diamond ring, the oval mixed-cut ruby set between stepped shoulders of baguette-cut diamonds, stamped ‘750’, ring size P. £600-£800 ...

An 18ct white gold ruby and diamond cluster ring, 1977, the oval mixed-cut ruby claw-set within a surround of brilliant-cut diamonds, London hallm...

A pair of 19th century pearl and diamond earrings, each set with an old cushion-shaped diamond suspending a baroque-shaped pearl drop, mounted in ...

A coloured diamond eternity ring by Graff, set with a continuous row of princess-cut diamonds of yellow tint, (diamonds untested for natural colou...

A diamond five stone ring, set with a row of baguette-cut diamonds to a plain polished band, mounted in 14ct gold, import mark for London 1984, t...

A pair of diamond eternity rings by Paul Simons, each angled to create illusion of a single ring, set throughout with brilliant-cut diamonds, both...