SAPPHIRE AND DIAMOND PENDANT/BROOCH, CIRCA 1880The oval-facetted sapphire within a radiating spray of old cushion-shaped diamonds accented by cali...

SAPPHIRE AND DIAMOND THREE-STONE RINGThe oval-cut sapphire between brilliant-cut diamonds, sapphire approx. 5.50cts, diamonds approx. 1.60cts tot...

TWO PAIRS OF GEM-SET AND DIAMOND EARRINGS1st: Each circular-cut sapphire within a brilliant-cut diamond surround, 2nd: Each circular-cut ruby with...

DIAMOND THREE-STONE RINGOld brilliant-cut diamonds, principal diamond approx. 1.65cts, remaining diamonds approx. 1.25cts total, ring size approx....

CULTURED PEARL NECKLACE WITH DIAMOND CLASP4.9-8.7mm cultured pearls, to an old brilliant-cut diamond set clasp of openwork design, diamonds approx...

DIAMOND THREE-STONE RINGThe principal cushion-shaped diamond weighing 2.29 carats between two similarly-cut diamonds weighing 0.99 and 0.98 carat,...

DIAMOND TWO-STONE RINGThe old cushion-shaped diamonds weighing 2.45 and 2.61 carats, between similarly-cut diamond shoulders, ring size approx. J½...

SAPPHIRE RINGCushion-shaped sapphire between circular-cut colourless gemstones, sapphire approx. 3.10cts, ring size approx. O½For further informat...

EMERALD AND DIAMOND RINGThe cushion-shaped emerald within a single-cut diamond double surround, ring size approx. P, cased by Wartski Ltd, 138 Reg...

PASTE GIRANDOLE PENDANT BROOCH AND TWO CHAINS, EARLY 19TH CENTURY1st: The oval paste cluster top flanked by stylised stem and bud motifs, suspendi...

DIAMOND EARRINGS, 19TH CENTURYEach old cushion-shaped diamond in a pinched collet setting, diamonds very approx. 2.90cts total, length 1.6cmFor fu...

ETRUSCAN REVIVAL NECKLACE, CIRCA 1870Designed as a fringe of concave flowers between circular flower motifs, with granulation detailing throughout...

AMETHYST DEMI-PARUREComprising a necklace, brooch and pendent earrings, the necklace with graduated oval-cut amethysts within a surround of cannet...

TURQUOISE AND DIAMOND PENDANT, EARLY 20TH CENTURYOf checkerboard design, set with alternating turquoise cabochons and rose-cut diamonds in closed-...

DIAMOND SINGLE-STONE RINGBrilliant-cut diamond, approx. 2.10cts, ring size approx. M½For further information on this lot please visit Bonhams.com

DIAMOND TARGET BROOCH, CIRCA 1890The circular openwork cluster set with old brilliant-cut diamonds, mounted in silver and gold, principal diamond ...

GÜBELIN: SPINEL AND DIAMOND RINGThe circular-cut spinel, weighing 2.88 carats, between trilliant-cut diamonds, maker's mark, diamond approx. 0.50c...

DIAMOND BROOCHThe central brilliant-cut diamond, weighing 1.81 carats, within a radiating knifewire surround set with similarly-cut diamonds, rema...

DIAMOND SINGLE-STONE RINGOld brilliant-cut diamond weighing approximately 3.20cts, mounted in platinum, London hallmark, ring size approx. N½Footn...

DIAMOND DOUBLE CLIP BROOCH, CIRCA 1950The stylised bow motif set throughout with single, brilliant and baguette-cut diamonds, diamonds approx. 4....

SAPPHIRE AND DIAMOND RINGThe oval-cut sapphire within a brilliant-cut diamond surround, between step-cut sapphires, principal sapphire approx. 2.3...

DIAMOND PENDENT EARRINGS, CIRCA 1920Each old brilliant-cut diamond issuing an openwork pendent of single-cut diamonds, terminating in an old brill...

EMERALD AND DIAMOND RING, CIRCA 1920The emerald cabochon to an articulated hoop, millegrain set with cushion-shaped and single-cut diamonds and tr...

ART DECO DIAMOND BRACELET, CIRCA 1935Centred by a geometric articulated openwork central panel of old-brilliant, baguette and step-cut diamonds, ...

DIAMOND SINGLE-STONE RINGThe old-brilliant cut diamond weighing 2.75 carats, ring size approx. O½ For further information on this lot please visit...

DIAMOND FIVE-STONE RING, CIRCA 1880Set to the front with five old brilliant-cut diamonds, in pinched collet settings, between fluted shoulders, di...

NATURAL PEARL AND DIAMOND NECKLACE AND EARRINGS 19TH CENTURY - EARLY 20TH CENTURY AND LATERComposed of graduating foliate drops, each collet-set w...

DIAMOND CLUSTER BOMBÉ HEART LOCKET, CIRCA 1860The front pavé set with rows of graduating old brilliant-cut diamonds surrounding a larger similarly...

DIAMOND SINGLE-STONE PENDANTBrilliant-cut diamond, weighing 2.41 carats, length 1.5cmFor further information on this lot please visit Bonhams.com

EMERALD AND DIAMOND RINGAlternating cushion and rose-cut diamonds with step-cut emeralds, three rose-cut diamonds deficient, principal diamond app...

DIAMOND CROSS BROOCH/PENDANT, CIRCA 1860Centred by a principal cushion-shaped diamond, the arms radiating outwards, set with similarly shaped diam...

SAPPHIRE AND DIAMOND CLUSTER RINGThe circular-cut sapphire within a single-cut diamond surround, between similarly-cut shoulders, sapphire approx....

DIAMOND PENDENT EARRINGS, 19TH CENTURYEach old cushion-shaped diamond cluster, suspending knifewire links set with old cushion and rose-cut diamon...

DIAMOND SINGLE-STONE RINGThe old brilliant-cut diamond weighing 3.46 carats, ring size approx. H (sizing beads)For further information on this lot...

DIAMOND TARGET PENDANT/BROOCH, SECOND HALF OF 20TH CENTURYOf tiered design, the outer border of cushion-shaped diamonds surrounding a circle of s...

DIAMOND RIVIÈRE, 19TH CENTURY AND LATERThe single row of 68 old cushion and circular-cut diamonds graduated towards the centre, mounted in silver...