Explore Opal Jewelry, High Jewelry, and more!

A black opal and diamond brooch, circa 1910. The oval cabochon black opal, to a scroll-leaf cresting set with old brilliant-cut diamonds, suspending a knifewire swag with similarly-cut diamond highlights and a cushion-shaped diamond drop. #opalsaustralia

An Edwardian black opal and diamond brooch, circa The oval cabochon black opal, to a scroll-leaf cresting set with old brilliant-cut diamonds, suspending a knifewire swag with similarly-cut diamond highlights and a cushion-shaped diamond drop.

A BELLE EPOQUE GEM-SET  ENAMEL BROOCH  Designed as an independently-set pear-shaped cabochon opal, within an openwork old European-cut diamond surround, enhanced by green enamel paisleys, each centering upon an old European-cut diamond  single-cut emerald foliate motif, from a navette-shaped old European-cut diamond plaque, centering upon an oval cabochon opal, accented by cabochon emeralds, mounted in platinum, circa 1915.

A BELLE EPOQUE GEM-SET ENAMEL BROOCH Designed as an independently-set pear-shaped cabochon opal, within an openwork old European-cut diamond surround, enhanced by green enamel paisleys, each centering upon an old European-cut diamond single-cut emerald

Belle epoque sapphire and diamond brooch, c.1905

A belle époque sapphire and diamond brooch, circa 1905 In the Garland Style, composed of two old brilliant and rose-cut diamond.

DIAMOND BROOCH.   Of open work design millegrain-set with circular- and rose-cut diamonds, the principal circular-cut diamond weighing 1.34 carats, suspending an articulated pearl drop, composite, later pin fitting, one small diamond deficient. Edwardian or Edwardian style.

Millegrain-set with circular and rose-cut diamonds. The principal circular-cut diamond weighing carats, suspending an articulated pearl drop, composite, later pin fitting.

Gold, Diamond and Cabochon Emerald Pendant-Brooch, circa 1905. The openwork modified shield-shaped pendant-brooch centring one flexibly-set round cabochon emerald, highlighted by seven old European-cut diamonds, set throughout with 64 old-mine cut diamonds.

Gold, Diamond and Cabochon Emerald Pendant-Brooch, circa The openwork modified shield-shaped pendant-brooch centring one flexibly-set round cabochon emerald, highlighted by seven old European-cut diamonds, set throughout with 64 old-mine cut diamonds.

A belle epoque sapphire and diamond brooch   The kite-shaped openwork panel set with brilliant-cut diamond scrolls and millegrain-set sapphire accents and central motif, suspending pear-shaped sapphire triple drops, circa 1905, detachable brooch fitting

A Belle Epoque sapphire diamond brooch The kite-shaped openwork panel set with brilliant-cut diamond scrolls millegrain-set sapphire accents central motif suspending pear-shaped sapphire triple drops ca 1905 detachable brooch fitting.

Emerald, ruby, sapphire, diamond and gold butterfly brooch.

A diamond and gem-set butterfly brooch late century

Black Opal and Diamond Brooch, René Boivin, Circa 1915

Black Opal and Diamond Brooch, René Boivin, Circa The pentagon-shaped black opal measuring approximately by mm., the pear-shaped black opal measuring approximately by mm.

Platinum-Topped Gold, Opal and Diamond Pendant-Brooch:The top centering an oval-shaped cabochon opal measuring approximately 12.3 by 9.4 by 3.2 mm, supporting a pear-shaped opal measuring approximately 15.7 by 9.9 by 3.3 mm, within a frame of scrollwork design decorated with diamond-set fringes and swags, set with pear-shaped, old European and single-cut diamonds weighing approximately 2.45 carats; circa 1905.

Platinum-Topped Gold, Opal and Diamond Pendant-Brooch: The top centering an oval-shaped cabochon opal measuring approximately by by mm, supporting a pear-shaped opal measuring approximately by by mm, within a frame of.

Edwardian Platinum, Sapphire and Diamond Brooch - Antique & Vintage Pins and Brooches - Shop for Jewelry

Edwardian Platinum, Sapphire and Diamond Brooch - Antique & Vintage Pins and Brooches - Shop for Jewelry

A Belle Epoque sapphire, diamond and cultured pearl brooch, circa 1910, with later modification. In April 1972, the cushion-shaped diamond weighing 17.13 carats was removed from the centre of the brooch and replaced with the cultured pearl, to make it a more suitable jewel for every-day wear. #BelleÉpoque #brooch

Brooch centring on a baroque cultured pearl of iridescent aubergine tint, encircled within lines of millegrain-set circular- and single-cut diamonds, and calibré-cut sapphires, to a similarly set pendant of ribbon design, 1910

An Art Deco opal, conch pearl and diamond brooch, 1920-40. The impressive diamond set geometric frame centrally set with a fine oval opal displaying intense play of colour surmounted by two conch pearl drops and fine black enamel and onyx detail, all in platinum

An Art Deco opal, conch pearl and diamond brooch, The impressive diamond set geometric frame centrally set with a fine oval opal displaying intense play of colour surmounted by two conch pearl drops and fine black enamel and onyx detail, all in platinum

OPAL AND DIAMOND BROOCH, CIRCA 1910. Set with a polished opal within an openwork frame millegrain-set with circular- and single- cut diamonds.

The OPAL collection of Princess Ceril Birabongse of Siam - Opal and diamond brooch, circa 1910 - Set with a polished opal within an openwork frame millegrain-set with circular- and single-cut diamonds.

An opal, cultured pearl, synthetic gemstone and diamond pendant-necklace cultured pearls measuring approximately 2.25-2.50mm, suspending a cushion-shaped opal measuring approximately 21 x 21mm, bordered by synthetic square-cut rubies, emeralds, sapphires and round brilliant-cut diamonds; estimated total diamond weight: 1.85 carats; mounted in eighteen karat bicolor gold.

An opal, cultured pearl, synthetic emerald, synthetic ruby, synthetic sapphire and diamond pendant-n. What a shame to surround so lovely a stone with synthetic stones

A RUBY AND DIAMOND CLIP BROOCH   Designed as oval-cut ruby and circular-cut diamond interlaced scrolls   RETAILED by Cartier in 1967, numbered 131982

A RUBY AND DIAMOND CLIP BROOCH Designed as oval-cut ruby and circular-cut diamond interlaced scrolls RETAILED by Cartier in 1967, numbered 131982

Diamond and sapphire Edwardian

An Edwardian Platinum Topped Gold, Natural Blue Spinel and Diamond Pendant/Brooch, containing one cushion cut greenish blue spinel in a multi claw prong setting within an interwoven foliate motif openwork surround and hinged drop containing numerous old E

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