Opal and Diamond Basket Brooch, 9ct Gold, 7.8g
Good 9ct gold opal and diamond basket brooch with 13 solid opals and 4 diamonds. Total weight approx 7.8 grams. One opal a/f
Opal and Diamond Dress Clip in 14ct Gold
An Edwardian opal and diamond dress clip, the pierced cartouche shaped plaque centred with a solid oval opal weighing 2.50cts, within an opal and diamond set surround, in 14ct gold, in original fitted box, by B & M Davis
Opal and Diamond Aigrette Brooch with 3.30ct Diamonds
An opal and diamond aigrette brooch with two white crystal opals and eighteen old-cut diamonds claw-set in yellow gold, unmarked, tests approx 15ct gold. Estimated total weight of diamonds 3.30ct. Wt 9g
Opal and Diamond Bar Brooch with Shoulder Diamonds
18ct opal and diamond bar brooch central oval milk opal with six shoulder diamonds
Celestial Opal and Diamond Necklace/Brooch
Opal and diamond necklace/brooch, circa 1910 of celestial design, the half moon-shaped black opal surmounted by a star motif accented with circular-cut diamond suspending an oval black opal surmounted by similarly set stars further suspending three lines…
Opal and Diamond Floral Basket Brooch
An opal and diamond brooch, 9ct yellow gold, hallmarked, made as a pierced floral basket arrangement of wire worked gold, set to basket with four old cut diamonds, each bezel set, to flowers thirteen solid white oval opals, many with strong spectral…
Opal and Diamond Pendant/Brooch in 18ct White Gold
An opal and diamond pendant/brooch, 18ct white gold, vintage, made as a large oval shaped cluster pendant, featuring an oval, cabochon cut white opal to centre, measuring approximately 28 x 21 mm, weighing approximately 25.00cts, displaying strong varied…
Opal and Diamond Crescent Brooch, Victorian Era
Victorian 9ct yellow gold, opal and diamond crescent shape brooch c.1890, the brooch is set with nine opals and eighteen old brilliant cut diamonds
Vintage Bug Brooch with Opal, Garnet, and Diamonds
A 9K yellow gold vintage bug brooch featuring a light opal body measuring 12.8 x 8.5 mm, garnet and old cut diamond highlights. Safety chain (later addition)
Opal and Diamond Brooch in 14ct Gold
An opal and diamond brooch, the elongated concave oval design featuring an oval opal, flanked by fine diamond detail, in 14ct yellow and rose gold.
Australian Opal and Diamond Shield Bar Brooch
An Australian 15ct yellow gold opal and diamond shield bar brooch one oval crystal opal, four old mine cut diamonds, the brooch was by Johnson and Simonsen, Melbourne
Opal and Diamond Crab Brooch in 14k Gold
An opal and diamond 'crab' brooch. With a central oval panel of treated opal matrix 14k yellow gold. Weight 35.46 grams
Opal and Diamond Brooch
An opal and diamond set brooch. 9ct yellow and white gold, made as an oval plaque brooch of curved profile, centrally set with a solid piece of cabochon opal, strong spectral colours throughout of red, blue, yellow and green, bezel set in an open backed…
Boulder Opal and Diamond Squid Brooch in 18ct Gold
An 18ct yellow gold boulderopal and diamond Squid brooch one boulder opal, 7ct blue green and red in colour and five round brilliant cut diamonds, 0.05ct in total, mounted in 18ct yellow gold. Total weight 11 g
Amethyst Flower Brooch & Opal Jewelry Set
Amethyst flower brooch, white gold with delicate textured yellow gold leaves, three small diamonds and an amethyst flower, a yellow gold nugget scarf pin hand set with a white opal, an opal necklet framed and delicately set with a fine silver chain (3),…
Solid Gold Opal & Diamond Bar Brooch with Missing Stone
15ct yellow gold solid opal and diamond bar brooch, 7 diamonds (4 x 0.10ct, 2 x 0.05ct, 1 x 0.25ct, all old cut), one opal missing from 1980. Total weight approx 13.4 grams
Opal and Diamond Victorian Crescent Brooch
A Victorian opal and diamond crescent brooch, set with eleven graduated oval solid white opals and interspaced with eighteen old European cut diamonds, mounted in a 15ct gold frame
Opal and Diamond Victorian Crescent Brooch
A Victorian opal and diamond crescent brooch, circa 1890, the crescent moon plaque set throughout with thirteen graduated circular opal cabochons, interspersed by old-cut diamonds, with detachable fittings, diamonds approximately 1.00 carat total, mounted…
Opal and Diamond Bee Brooch
An opal and diamond bee brooch, the finely crafted articulated bee set with two opals, rose cut diamonds and sapphires cut en cabochon, in silver gilt
Victorian Opal and Gemstone Brooch
9ct antique Victorian white opal, gemset brooch. Late Victorian white opal set in claw setting of 7.82ct with good rolling colour of red, blue, green and yellow. Floral surround set with rose cut diamonds .12ct, natural sapphires.18ct and rubies.14ct.…
Grima Opal and Diamond Brooch
An opal and diamond brooch by Grima handcrafted with opal triplets and diamonds within a textured 18ct gold frame, hallmarked and signed
Opal & Diamond Bar Brooch in Yellow Gold
Yellow gold opal & diamond set bar brooch. Central solid oval opal surrounded by rose cut diamonds. Wt.5.2g
Victorian Opal and Diamond Brooch
An antique opal and diamond brooch, 15ct yellow gold, Victorian, made as a marquise shaped panel brooch, centrally set with a solid cabochon marquise shaped piece of black crystal opal, large blocked spectral colours throughout of green and blue, claw set…
Opal, Ruby and Diamond Insect Brooch
An opal, ruby and diamond brooch, modelled as an insect, the body set with solid white opal and rubies, the wings set with diamonds and the eyes and antenna set with sapphire and emerald, in 14ct gold
Opal and Diamond Sunburst Brooch/Pendant by Forster, Melbourne
18ct gold, opal and diamond sunburst brooch / pendant, Forster, Melbourne, early 20th century centring a claw-set opal weighing approximately 4.25 carats surrounded by a cluster of old European-cut diamonds, the rays similarly set with graduated diamonds,…
Opal and Diamond Bar Brooch in 18ct Gold
An opal and diamond bar brooch, the oval solid black opal cabochon set either side with three diamonds. 18ct yellow gold. Weight 5 grams. Length 6 cm.
Opal, Ruby and Diamond Crescent Brooch in 9ct Gold
Early 9ct yellow gold ruby, opal & diamond brooch. Crescent shape set with 13 opals;13 diamonds; & 3 rubies set to bar of brooch. Provenance: Estate Australian collector, weight 6.8g
Opal and Diamond Brooch in Platinum Foliate Frame
An antique opal and diamond brooch, centrally set with a free form polished boulder opal in a pierced foliate frame set with mixed cut diamonds, mounted in platinum.
Forster's Opal and Diamond Starfish Pendant/Brooch
An antique Australian opal and diamond pendant/brooch by Forster, of starfish design, centrally set with an opal cut en cabochon, each free form arm set with a row of graduated old European cut diamonds totallng 6.30cts, signed Forster, mounted in 18ct…
Opal and Diamond Bar Brooch in 18ct Gold
18ct gold, solid opal and diamond bar brooch, weight: approx 3.9 grams
Opal, Diamond, and Ruby Swan Brooch by Prouds Jewellers
A unique light opal, diamond and ruby brooch in the form of a swan, pierced neck, ruby set eye, light opal body with good play-of-colour surrounded by approx 0.40cts of diamonds; 18ct white gold. Made by Prouds Jewellers c.1930. Safety chain attachment.…
Opal and Diamond Cartouche Brooch/Pendant
Diamond, opal and enamel brooch / pendant, 14ct yellow gold, of openwork cartouche embellished with black enamel, centring an opal cabochon, featuring seven round brilliant-cut diamonds, stamped '14k, approx. Weight 16.3 grams
Opal, Pearl, and Diamond Ribbon Brooch
A diamond, pearl and opal brooch, of ribbon design, set with a solid opal cabochon, a button pearl and six round brilliant cut diamonds of known weight 0.19 carat. 18ct yellow gold. Weight 9.22 grams. Length 52 mm
Opal and Diamond Bar Brooch in 18ct Gold
An 18ct gold opal and diamond bar brooch, centring a 10 x 7.5 mm fine crystal opal adjacent to crescent mounts set with single cut diamonds, length 58 mm, wt. 4.7g.
Peacock-inspired Opal Brooch with Diamond and Gold Accents
An opal set gold brooch, 18ct yellow gold, made as a fan shaped brooch of peacock inspiration, detailed by a curved arrangement of nine heart shaped solid crystal opals of strong colour and graduated form, the central of largest size, claw set, edged in…
Opal and Diamond Bar Brooch with Central Cluster
18ct opal and diamond bar brooch central cluster of oval milk opal and 20 diamonds
Opal and Diamond Bar Brooch by Denton Jewellers, Wellington
New Zealand 15ct opal and diamond bar brooch large oval cabochon translucent milk opal with four old brilliant cut diamonds surrounding on scrolling frame. Made by Denton Jewellers, Wellington opal size 26 x 12 x 3.2 mm Provenance: Being of direct family…
Opal and Diamond Cocktail Brooch in 14ct Gold
An opal and diamond cocktail brooch, the stylised foliage set with an oval solid white opal cut en cabochon, offset by twenty eight round brilliant cut diamonds totalling 1.23cts, mounted in 14ct white and yellow gold
Opal and Diamond Brooch in 14ct White Gold
14ct white gold, opal and diamond brooch, centring a claw-set cushion-shaped opal measuring approximately 18.00 x 14.00 x 8.00 mm framed by a line of brilliant-cut diamonds flanked by a foliate motif embellished with diamonds, the diamonds together…
Opal and Diamond Retro Brooch/Pendant
A retro opal and diamond set brooch / pendant. 18ct yellow gold, circa 1960's, made as an abstract triangular formed brooch with central solid crystal opal of varied colour, bezel set in an open backed mount, framed by ten tiny brilliant cut diamonds,…
Opal and Diamond Brooch/Pendant in 15ct Gold
An antique Australian opal and diamond brooch / pendant, the pierced oval plaque set with solid white opals cut en cabochon and interspaced with old European cut diamonds, with detachable bale and brooch pin fitting, mounted in 15ct gold, boxed.
Peacock Pearl Brooch with Coloured Diamonds and Gemstones
18ct gold, coloured diamond, diamond and gem-set brooch, modelled as a peacock resting on a 14.85 mm South Sea cultured pearl, the eyes accented with a circular-cut ruby, the neck and saddle pave set with brilliant-cut diamonds of yellow hue, the breast…
Opal and Diamond Brooch Pendant in 18ct White Gold
Exquisite opal and diamond set brooch / pendant with five large solid opals and two diamonds in 18ct white gold
Opal and Diamond Pendant/Brooch with 14ct Gold Frame
An opal and diamond pendant/brooch, the pierced scroll frame set throughout with round brilliant cut diamonds, centrally suspended with a pear shaped solid white opal cut en cabochon displaying good play of colour, suspended to a trace chain, all mounted…
Opal and Diamond Bar Brooch in 18ct White Gold
An antique opal and diamond bar brooch, the oval solid black opal cut en cabochon displaying red, green and blue colours, surrounded by fourteen single cut diamonds, set above a knife edge bar, mounted in 18ct white gold.
Black Opal and Diamond Antique Brooch Pendant
A stunning solid black opal and diamond brooch / pendant, 18ct and 14ct white gold, antique styled, the feature oval cluster set with a central solid black opal from Lightening Ridge, weighing approximately 2.88ct, intense colours throughout of red, blue,…
Opal and Diamond Brooch in Gold and Platinum
A solid white opal and diamond set brooch, 18ct yellow gold and platinum, retailed through Catanachs, presented as a solid cabochon white opal of strong blocked spectral colours, lime, red, blue and violet throughout, weighing approximately 1`6.80ct,…
9ct Gold Opal & Diamond Bar Brooch with 2 Diamonds
A 9ct yellow gold solid opal & diamond bar brooch, one round solid semi black opal 9 mm with two old mine cut diamonds, 0.10ct mounted in a yellow gold fancy bar brooch, Wt 3.4grams
Opal and Diamond Bar Brooch in 14ct Gold
14ct gold, opal triplet and diamond bar brooch, weight: 4.33 grams
Crystal Opal and Diamond Antique Brooch
A crystal opal and diamond antique brooch. 15ct yellow gold, hallmarked Australian, presented as a bar brooch style piece, centred by an oval cabochon crystal opal of strong spectral colours, measuring approximately 11 x 9 mm, framed by smaller old cut…
Black Opal and Diamond Brooch in White and Rose Gold
Diamond and opal brooch, featuring a pear shaped black boulder opal surrounded by a cluster of diamonds grain set in 18ct white gold with milgrain detailing, upon a 15ct rose gold bar, with a safety chain, stamped 'W.15.D, 5.14 grams
Mexican Fire Opal Brooch with Diamonds and Pearls
An antique fire opal brooch, the circular brooch set with a Mexican fire opal cut en cabochon, surrounded by a border of twelve old European cut diamonds, to an outer row of pearls, mounted in rose gold.
Vivid Black Opal and Diamond Floral Brooch
An exceptional black opal and diamond brooch, designed as a freeform floral spray, having three solid black opals displaying a vivid play-of-colour all totalling 15.45cts, the main stone with harlequin pattern, accompanying stones with harlequin and…
Opal, Sapphire, and Diamond Brooch in 9ct Gold
9ct gold, opal, sapphire and diamond hand made brooch in 9ct (tests as) set with a single solitaire black opal approx 23.3 mm x 23.5 mm x 7.3 mm cut cabochon. Colours include: green, yellow, orange and some red. sapphire approx 3.2 mm-3.4 mm round…
Opal and Diamond Enhancer/Brooch in 18ct Yellow Gold
Doublet opal & diamond Enhancer/Brooch, a 19 x 23 mm freeform doublet embellished with twenty-six round brilliant cut diamonds totalling 0.13cts, H-I, Si, set in 18ct yellow gold fancy scroll design, measuring an overall 53 x 28 mm, with box, 13.4 grams
Flower Opal Diamond Gold Brooch
Opal, diamond and gold brooch. An carved opal in the form of a flower set with, appro@ 5@ round cut diamonds, appro@ 5.90 grams weight
Opal & Diamond Handmade Antique Brooch in Original Box
Antique gold, diamond and opal brooch handmade hanging brooch with a gold ribbon form top set with 9@ old cut diamonds. The backed flat drop opal measures appro@ 40.9 mm length, 23.9 mm wide. Unmarked. In its original box
Opal and Diamond Brooch in 18ct Gold
An opal and diamond brooch, the oval opal cut en cabochon, within a surround of old European cut diamonds, in 18ct gold.
Opal and Diamond Floral Brooch in 14ct White Gold
An opal and diamond brooch, of stylised floral form, centred with a round opal cut en cabochon, within an open surround set with round brilliant and single cut diamonds, in 14ct white gold.
Opal and Diamond Art Deco Brooch
An Art Deco opal and diamond brooch, the geometric plaque featuring a central oval opal doublet with fine play of colour, within a pierced surround set with single cut diamonds, in platinum.
Victorian Opal and Diamond Insect Brooch
A Victorian insect brooch, claw set oval 7.0 x 5.0 mm cabochon opal throax accented with one claw set early round cut diamond of estimated weight 0.08 carats, fourteen grain set demantoid garnets of estimated total weight 0.11 carats and sixteen grain set…
Opal and Diamond Bar Brooch with Certificate
An opal and diamond bar brooch, the central oval white opal weighing 2.20cts surrounded by twenty old cut diamonds, estimated weight 0.80cts and two old cut diamonds, estimated weight 0.30cts, in 18ct yellow and white gold, with accompanying John T.…
Opal and Diamond Brooch Pendant in 18ct White Gold
An opal and diamond brooch / pendant, featuring an oval opal cut en cabochon weighing 49.60cts, surrounded by round brilliant cut diamonds totalling 2.08cts, in 18ct white gold.
18ct Gold Opal & Diamond Bar Brooch with Rose Cut
An 18ct yellow gold solid white opal & diamond bar brooch, one solid opal, 3 mm with rose cut diamonds, 0.15ct mounted in a bar brooch Wt 8.5 grams
14ct Gold Opal & Diamond Bar Brooch
An 14ct yellow gold solid white opal & diamond bar brooch, one solid opal, 3 mm with rose cut diamonds, 0.15ct mounted in a bar brooch, Wt 8.5 grams
Opal & Diamond Butterfly Brooch in 9ct Gold
An opal and diamond butterfly brooch, Comprisng wings set with boulder opal and antennae set with round brilliant cut diamonds, in 9ct gold.
Opal and Diamond Heart Pendant/Brooch
An impressive Edwardian 9ct gold opal and diamond pendant/brooch, the 41.30ct white opal in the form of a heart with a bright red-blue multi-colour play of fire, held by three diamond set claws, the opal heart pierced by a diamond set arrow, with a…
Opal, Diamond & Pearl Brooch in 9ct Gold & Silver
An opal, diamond and seed pearl brooch, featuring an oval opal within a surround of eight old European cut diamonds and pearl set terminals, in 9ct gold and silver.
Opal and Diamond Bar Brooch in 18ct Gold and Platinum
An opal and diamond bar brooch, the solid oval opal weighing an estimated 3.75cts, flanked by single cut diamonds, all centred on a bar, in 18ct gold and platinum.
Agatha Christie's Giardinetto Brooch with Precious Stones
A diamond and gem set Giardinetto brooch formerly belonging to Agatha Christie, the sizable basket and bouquet comprising opals, rubies, sapphires, emeralds, rose and single cut diamonds, all in two tone 18ct gold, circa 1950. Provenance: Sale of the…
Jelly Opal Gold Bar Brooch with Diamonds and Coins
Gold bar brooch set with a cabochon jelly opal surrounded by 4 diamonds and flanked by two American gold coins, 6 cm long, 6.6 grams total
Opal and Diamond Brooch with Foliate Motif
Opal and diamond brooch the oval cabochon opal weighing approximately 6.50 carats is claw-set in 18ct matte gold and partially framed by a stylised foliate motif embellished with brilliant-cut diamonds, the diamonds together weighing approximately 0.15…
Art Deco Opal and Diamond Brooch
An opal and diamond brooch, of Art Deco style, the pierced bar, centred with a solid oval opal within a surround of fine diamond detail in millegrain decoration, in platinum.
Opal and Diamond Brooch with Rose Cut Accents
An opal and diamond brooch, the oval opal weighing an estimated 14.05cts with fine play of colour, detailed with four rose cut diamonds, in 15ct gold, circa 1930.
Opal and Diamond Ribbon Brooch
An 18ct opal and diamond set ribbon brooch, the oval cabochon cut semi translucent very bright-bright opal with green to orange dominant hues, the white gold bars highlighted by five round brilliant cut diamonds of TDW. 0.19ct. Length 11.5 cm.
Grima Opal and Diamond Starburst Brooch
Grima, an opal and diamond brooch, of star burst design, centrally set with a free form black boulder opal measuring approximately 14.48 x 9.83 mm within a halo of round brilliant-cut diamonds, signed Grima, mounted in gold, length 3.00 cm.
Opal and Diamond Bee Brooch by Tony White
Tony White, a cultured pearl, opal and diamond brooch, designed as a bee, set with opal, round brilliant-cut diamonds and an oval and drop-shaped cultured pearl, the latter measuring approximately 11.90 x 9.88 mm, signed white, estimated total diamond…
Opal and Diamond Brooch with Rubies and Pearls
15ct yellow gold brooch set with opal, diamond seed pearls and rubies
Opal, Diamond and Ruby Insect Brooch by Hardy Bros
An antique opal, diamond and ruby brooch, the finely detailed insect, having a cabochon opal set body, ruby set eyes and rose cut diamond set wings, in 9ct gold, retailed by Hardy Bros Ltd, boxed.
Victorian Opal and Diamond Brooch in Hardy Bros. Box
Victorian opal and diamond set yellow gold brooch in a Hardy Bros. Sydney box. Length 75 mm, weight 11 grams, 19x oval opal cabochons 2 x 2.3 mm - 8.5 x 5.4 mm. Tests as 18ct gold. Estimated opal weight 6.90ct of South Australian crystal opal type.…
Antique Gold Opal Diamond Bar Brooch
An antique gold bar brooch set with sold opal surrounded by old cut diamonds, 19th century, stamped '9ct', 5.75 cm wide, 5.7 grams
Opal Stickpin, Earring & Diamond Brooch Set, Antique 19th Century
An antique rose gold and solid opal stickpin, hoop earring and diamond set bar brooch (incomplete), 19th century, (3 items), 4.7 grams total
Opal and Diamond 9ct Gold Bar Brooch
A bar brooch, set with a white opal, single diamond, on 9ct gold. Weight 3.4grams.
Opal and Diamond Brooch/Pendant in White Gold
18ct white gold, opal and diamond brooch/pendant, centring a freeform boulder opal, overlaid with round brilliant-cut diamond decoration, within a large basket surround bordered by further brilliant-cut diamonds together weighing approximately 1.30 carats…
Opal and Diamond Antique Rose Gold Brooch
Antique rose gold and milky cabochon opal and diamond bar brooch and safety chain, hallmarked Birmingham 1896, 15.625ct
Opal and Diamond Brooch/Pendant in Yellow & White Gold
18ct yellow & white gold opal & diamond brooch/pendant, oval white opal multi claw, set with 3 diamonds above, below and to each side in white gold four claw collets, diamond weight around 1.08ct, opal approx. 12ct. Total weight approx. 10.5g (approx.).…
Black Opal & Diamond Gold Brooch, Mid-Century Australian
Mid century Australian black opal & diamond set with gold brooch, unmarked, opal dimensions 21 x 19 x 5 mm, item weight 10.60ct. Set with old mine cut diamonds, the gemstones were taken from an older piece and reset. tests as 12ct
Opal and Ruby Duck Brooch with Diamonds
A gold, opal and ruby duck brooch the textured gold duck set with a white opal cabochon belly and ruby eye, sitting atop a pool of water in white gold, accented with single-cut diamonds, estimated total diamond weight 0.20 carats, mounted in 18ct white…
Frog Opal Brooch with Diamond Eyes
Solid white opal brooch styled in a frog design and set with two old European cut diamonds as eyes approximate weight 0.25ct and oval opal with good play orange yellows. Total weight of the 18ct gold brooch is 8.4 grams.
Modern Opal and Diamond Brooch in 18ct Yellow Gold
An 18ct yellow gold, modern opal and diamond brooch, featuring one channel / tab set triangular opal tablet of reported weight 22.0 carats, surrounded by nine grain set round brilliant cut diamonds of reported total weight .20 carats, in a hexagonal,…
Opal and Diamond Brooch in White Gold
14ct white gold, opal and diamond brooch, the oval opal cut en cabochon weighing approximately 68.00 carats, within a surround of twenty-four old European-cut diamonds together weighing approximately 2.80 carats, length approximately 28 mm, width…
Opal and Diamond Cluster Brooch in 9ct Gold and Silver
9ct gold, silver, opal and diamond brooch, of openwork cluster design, comprising nine circular opals cut en cabochon together weighing approximately 0.80 carats and old European and rose-cut diamonds together weighing approximately 1.92 carats, diameter…
Black Opal and Diamond White Gold Brooch
Black opal and 18ct white gold brooch also set with 6x round brilliant cut diamonds, marked 750, opal size 21 x 13 x 3.2 mm, item weight 11.3 grams
Opal and Diamond French Brooch
Opal and diamond brooch, the outstretched wings centred by an oval opal and suspending an opal drop, French assay mark, mounted in gold, weight 7.5gm, width 6.5 cm.
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