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ID #SA1213689
FOR SALE
£3,200
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Antique 2.80 Carat Black Opal & Diamond Pendant, Circa 1910
For sale by Gatsby Jewellery Ltd
for sale €3,744     $4,064
£3,200
Gatsby Jewellery Ltd

Gatsby Jewellery Ltd

Sellingantiques Verified Since May 2014
Browse dealers 276 items
  • About Us
    Gatsby jewellery are a husband and wife team who have years of knowledge and experience in dealing in fine antique jewellery.
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Id #SA1213689
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Antique 2.80 Carat Black Opal & Diamond Pendant, Circa 1910

1900 - 1920
Description

An absolutely gorgeous vintage pendant. The phenomenal black opal displays an impressive play of colour, with clear and dramatic flashes of green and blue. The stone is secured in a milgrained platinum rubover setting atop a closed yellow gold gallery, with a bright and lively transitional cut diamond – also rubover set in platinum and yellow gold – hanging from a ‘V’ bale.

Please choose a 16″ or 18″ 18k yellow gold chain (this is included in the price).

Accompanied by a report from Gemmological Certification Services (GCS) stating the opal is natural and shows no indication of treatment.

Cut:  Oval cabochon opal and an old European cut diamond.

Colour:  The diamond is G.

Clarity:  The diamond is SI2.

Carat:  The opal is approximately 2.80 carat. The diamond is approximately 0.15 carat.

Circa:  1910.

Measurements:  The opal is approximately 12.3 x 9.0mm. From the bottom of the opal to the top of the diamond is 34mm.

Weight:  The pendant, not including a chain, is 2.00 grams.

Metal:  18k yellow gold and platinum. Tested with a Niton DXL Precious Metal Analyzer.

Video: To view a video of this pendant recorded in daylight, please either contact us or copy / paste the following link into your browser: https://gatsbyjewellery.co.uk/products/antique-2-80-carat-black-opal-diamond-pendant-circa-1910

Item # 811514S331

Date of Manufacture

Gatsby Jewellery Ltd has dated this Edwardian Black Opal Pendant to the 1910s.

Independent Date Guide ID 09495823
Dealer's Item Date1910s
Sellingantiques Date1910s
Sellingantiques agingItem 100-120 years old
ResultsDates match
Why Sellingantiques dated this piece to THE 1910s:
White metal face over yellow gold gallery: two-tone mounting common around 1910.
Fine beaded millegrain along the setting rims: hand-tooled borders framing each stone.
Old round-cut diamond: faceting style used before modern brilliant cuts became standard.
Vibrant blue and green play of colour: typical of Australian black opals mined from 1905.

This Independent Date Guide was compiled by Sellingantiques using its own proprietary system. It works only from the photographs shown on this page and is never told the date the dealer has declared. It is a guide, not a guarantee of age, and occasional errors can occur.

Reference Numbers
Sellingantiques Reference
SA1213689
Dealers Internal Reference
118514S331
Description
An absolutely gorgeous vintage pendant.
“
The phenomenal black opal displays an impressive play of colour, with clear and dramatic flashes of green and blue.
Gatsby Jewellery Ltd

The stone is secured in a milgrained platinum rubover setting atop a closed yellow gold gallery, with a bright and lively transitional cut diamond – also rubover set in platinum and yellow gold – hanging from a ‘V’ bale.

fig 1. An Edwardian black opal and diamond pendant featuring an oval cabochon opal with blue and green play-of-colour mounted in gold below a bezel-set diamond.
fig 1. Antique 2.80 Carat Black Opal & Diamond Pendant, Circa 1910

Please choose a 16″ or 18″ 18k yellow gold chain (this is included in the price).

Accompanied by a report from Gemmological Certification Services (GCS) stating the opal is natural and shows no indication of treatment.

fig 2. An Edwardian black opal and diamond pendant featuring an oval cabochon opal with blue and green play-of-colour mounted in gold below a bezel-set diamond.
fig 2. Antique 2.80 Carat Black Opal & Diamond Pendant, Circa 1910

Cut:  Oval cabochon opal and an old European cut diamond.

Colour:  The diamond is G.

Clarity:  The diamond is SI2.

Carat:  The opal is approximately 2.80 carat. The diamond is approximately 0.15 carat.

Circa:  1910.

fig 3. An Edwardian black opal and diamond pendant featuring an oval cabochon opal with blue and green play-of-colour mounted in gold below a bezel-set diamond.
fig 3. Antique 2.80 Carat Black Opal & Diamond Pendant, Circa 1910

Measurements:  The opal is approximately 12.3 x 9.0mm. From the bottom of the opal to the top of the diamond is 34mm.

Weight:  The pendant, not including a chain, is 2.00 grams.

Metal:  18k yellow gold and platinum. Tested with a Niton DXL Precious Metal Analyzer.

fig 4. An Edwardian black opal and diamond pendant featuring an oval cabochon opal with blue and green play-of-colour mounted in gold below a bezel-set diamond.
fig 4. Antique 2.80 Carat Black Opal & Diamond Pendant, Circa 1910

Video: To view a video of this pendant recorded in daylight, please either contact us or copy / paste the following link into your browser: https://gatsbyjewellery.co.uk/products/antique-2-80-carat-black-opal-diamond-pendant-circa-1910

Item # 811514S331

Date of Manufacture

Gatsby Jewellery Ltd has dated this Edwardian Black Opal Pendant to the 1910s.

Independent Date Report ID 09495823
Dealer's Item Date1910s
Sellingantiques dating1910s
Sellingantiques agingItem 100-120 years old
ResultsDates match
Why Sellingantiques dated this piece to the 1910s:
White metal face over yellow gold gallery: two-tone mounting common around 1910.
Fine beaded millegrain along the setting rims: hand-tooled borders framing each stone.
Old round-cut diamond: faceting style used before modern brilliant cuts became standard.
Vibrant blue and green play of colour: typical of Australian black opals mined from 1905.

This is an independent date report produced by Sellingantiques using its own proprietary system. The process uses the photographs shown on this page. The system is never told the date the dealer has declared. This report shows that the two dates corroborate.

Reference Numbers
Sellingantiques Ref
SA1213689
Dealers Internal Ref
118514S331
Gatsby Jewellery Ltd
Gatsby Jewellery Ltd
Sellingantiques verified Since May 2014

Gatsby jewellery are a husband and wife team who have years of knowledge and experience in dealing in fine antique jewellery.

Dealer Profile

You can view the stock and full dealer information on the Gatsby Jewellery Ltd Profile Page

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An Edwardian black opal and diamond pendant featuring an oval cabochon opal with blue and green play-of-colour mounted in gold below a bezel-set diamond.
1 / 7
Archive I An Edwardian black opal and diamond pendant featuring an oval cabochon opal with blue and green play-of-colour mounted in gold below a bezel-set diamond.

Antique 2.80 Carat Black Opal & Diamond Pendant, Circa 1910

Archive II An Edwardian black opal and diamond pendant featuring an oval cabochon opal with blue and green play-of-colour mounted in gold below a bezel-set diamond. View II
Archive III An Edwardian black opal and diamond pendant featuring an oval cabochon opal with blue and green play-of-colour mounted in gold below a bezel-set diamond. View III
Archive IV An Edwardian black opal and diamond pendant featuring an oval cabochon opal with blue and green play-of-colour mounted in gold below a bezel-set diamond. View IV
Archive V An Edwardian black opal and diamond pendant featuring an oval cabochon opal with blue and green play-of-colour mounted in gold below a bezel-set diamond. View V
Archive VI An Edwardian black opal and diamond pendant featuring an oval cabochon opal with blue and green play-of-colour mounted in gold below a bezel-set diamond. View VI
Archive VII An Edwardian black opal and diamond pendant featuring an oval cabochon opal with blue and green play-of-colour mounted in gold below a bezel-set diamond. View VII
Enlarged Archival View
Gatsby Jewellery Ltd

Gatsby Jewellery Ltd
Telephone 01992 842 123
Location
Gatsby Jewellery Ltd
3 Coppice Row
Theydon Bois
Essex
CM16 7ES
United Kingdom
Dealer Profile Page sellingantiques.co.uk/gatsby
Verified Since May 2014
Items For Sale 276
Items Sold 2,983
Gatsby Jewellery Ltd
Gatsby Jewellery Ltd
Verified Since May 2014
View Dealer Info
Location: Gatsby Jewellery Ltd, 3 Coppice Row, Theydon Bois, Essex, CM16 7ES, United Kingdom
Profile: sellingantiques.co.uk/gatsby
Verified
May 2014
For Sale
276
Sold
2,983
An Edwardian black opal and diamond pendant featuring an oval cabochon opal with blue and green play-of-colour mounted in gold below a bezel-set diamond.
Antique 2.80 Carat Black Opal & Diamond Pendant, circa 1910
Ref: SA1213689
An Edwardian black opal and diamond pendant featuring an oval cabochon opal with blue and green play-of-colour mounted in gold below a bezel-set diamond.
Detail View 1
Detail View 2
Detail View 3
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Detail View 6
Archival Detail

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Cataloguer’s note

Written by Sellingantiques from the dealer’s photographs and listing
  • ObjectPendants & Necklaces
  • Period1900 - 1920
  • StyleEdwardian
  • MaterialBlack Opal, Diamond, Gold
  • ColourGreen and Blue
  • MotifsOval cabochon cut, Bezel setting, Diamond accent, Tapered bail

This Edwardian pendant dates from circa 1910 and belongs to the pendants and necklaces category. The item consists of an oval cabochon cut black opal in a bezel setting, accompanied by a diamond accent and a tapered bail. The materials comprise black opal, diamond, gold, and platinum, with green and blue colours visible on the stone surface. The design incorporates a milgrained platinum rubover setting atop a closed yellow gold gallery, paired with an old European cut diamond and a 'V' bale. The pendant measures 34 mm from the bottom of the opal to the top of the diamond, with the opal itself measuring 12.3 x 9.0 mm and weighing 2.00 grams. Buyers can select a 16 inch or 18 inch 18k yellow gold chain to accompany the piece. Certification details from Gemmological Certification Services confirm the natural, untreated status of the 2.80 carat opal, whilst the G colour, SI2 clarity diamond weighs approximately 0.15 carat. This antique jewellery item suits formal wear or special occasions when suspended from a neck chain, adding a colourful focal point to an ensemble.

FAQs

Jewellery from this era is characterised by refined metalwork, light bezel settings, and the popularisation of natural Australian black opals featuring vivid spectral play-of-colour.

Pendants from this period typically combined high-karat yellow gold or platinum with natural gemstones, incorporating diamond accents to highlight the central stone.

Authentic pieces demonstrate hand-crafted collet or bezel mounts, fine millegrain or rubbed edges, period-appropriate gold hallmarks, and natural gem-quality opals.

An antique opal pendant serves as an elegant focal piece when worn against neutral fabrics, paired with simple gold chains, or styled for formal evening attire.

Opals should be cleaned gently using a dry or slightly damp soft cloth, avoiding immersion in water, extreme heat, chemical solvents, or ultrasonic cleaners.
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