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ID #SA1237189
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£4,950
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1.50ct Basaltic Sapphire and 1.92ct Diamond 9ct White Gold Brooch - Antique Circa 1925
For sale by AC Silver
for sale €5,792     $6,287
£4,950
AC Silver

AC Silver

Sellingantiques Verified Since Apr 2009
Browse dealers 413 items
  • About Us
    Welcome to ac silver antique silver and antique jewellery specialists since 1977
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    AC Silver is a registered member of LAPADA  CINOA
Id #SA1237189
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1.50ct Basaltic Sapphire and 1.92ct Diamond 9ct White Gold Brooch - Antique Circa 1925

1900 - 1920
For Sale by AC Silver
Description

A stunning, fine and impressive antique 1.50 carat Basaltic sapphire, 1.92 carat diamond, 9 carat white gold and platinum brooch; part of our 1920s jewellery collection.

This stunning, fine and impressive antique sapphire and diamond brooch has been crafted in 9ct white gold with a platinum setting.

This antique brooch is embellished with a stunning feature four-claw set 1.50ct oval cut Basaltic sapphire, to the centre of the design.

The finely hand-crafted tapering setting of this stunning brooch is ornamented with pierced decorated scrolling motifs accented with a paralleling border, embellished with a total of eighty pavé set eight-cut diamonds.

The antique sapphire and diamond brooch secures to the reverse with a hinged pin and clasp.

This antique brooch has been independently tested using state of the art technology (Niton XL2 Analyzer) and verified as 9 carat gold and platinum.

This impressive antique sapphire and diamond brooch is supplied with an IDGL diamond and gemstone grading report card, in addition to a sapphire report card and certificate supplied by the Gemmological Certification Services, London*.

This 1920s sapphire and diamond brooch in platinum is an exceptional gift for milestone birthdays, landmark anniversaries, retirement celebrations, Mother's Day or significant personal achievements. Its authentic 1920s provenance, refined platinum setting and timeless design also give it outstanding heirloom appeal, making it a meaningful piece to be treasured and passed down through generations. Whether worn on a lapel, dress, scarf or evening gown, this antique sapphire and diamond brooch is a timeless expression of style, craftsmanship and enduring sentiment.

NOTE: * This documentation accredits the sapphire originating in Basaltic deposits and certifies that the gemstone shows no indications of heating.

Images do not always reflect the true colour and brilliance of gemstones and diamonds. The video however provides a truer representation of the actual colour and showcases each stone.

Condition

This stunning antique brooch is exceptional quality, set with an impressive sapphire displaying fine colour, brilliance and presence; under magnification some very minor surface blemishes are visible, this does not detract from the aesthetically pleasing appearance.

The impressive well colour matched diamonds display a fine white colour and brilliance.

The brooch is an exceptional gauge of gold and platinum and is in exceptional condition.

Reflections in photographs may detract from the true representation of this fine example of antique sapphire jewellery.

Sapphire Quality

Origin Basaltic Deposit

Colour Blue

Cut Oval

Content 1.50 carats

Dimensions 7.70mm (length) x 5.90mm (width) x 3.50mm (depth)

Diamond Quality

Colour (average grades) I

Clarity (average grades) SI1

Cut Eight

Content 1.92 carats

Number of Diamonds

80

Dimensions

Length of setting 4.7cm/1.85'

Width of setting 1.48cm/0.58'

Across pin 4.01cm/1.58'

Height of setting 4.92mm/0.19'

Weight

6.82 grams

Date: Circa 1925

SKU: C9857

Physical Dimensions
Height
0.492cm (0.19")
Width
1.48cm (0.58")
Depth
4.7cm (1.85")
Declaration

AC Silver has dated this Art Deco Sapphire Brooch to the 1920s.

Reference Numbers
Sellingantiques Reference
SA1237189
Dealers Internal Reference
C9857
Dealers Notes

PLEASE NOTE: AC Silver takes pride in offering only quality items for sale.

This pride in quality includes the professional, efficient and personal service extended to all AC Silver customers.

All items purchased usually dispatched within 24 hours following cleared payment.

All items are professionally and securely packaged, sent FREE of charge and are FULLY INSURED during transit.

FREE worldwide international deliveries are via FedEx International Priority Service.

AC Silver is pleased to provide a 30-day money back guarantee.

Description
A stunning, fine and impressive antique 1.50 carat Basaltic sapphire, 1.92 carat diamond, 9 carat white gold and platinum brooch; part of our 1920s jewellery collection.
“
This stunning, fine and impressive antique sapphire and diamond brooch has been crafted in 9ct white gold with a platinum setting.
AC Silver
fig 1. An Art Deco 9ct white gold brooch featuring a central oval blue sapphire framed by geometric openwork set with round diamonds.
fig 1. 1.50ct Basaltic Sapphire and 1.92ct Diamond 9ct White Gold Brooch - Antique Circa 1925

This antique brooch is embellished with a stunning feature four-claw set 1.50ct oval cut Basaltic sapphire, to the centre of the design.

The finely hand-crafted tapering setting of this stunning brooch is ornamented with pierced decorated scrolling motifs accented with a paralleling border, embellished with a total of eighty pavé set eight-cut diamonds.

fig 2. An Art Deco 9ct white gold brooch featuring a central oval blue sapphire framed by geometric openwork set with round diamonds.
fig 2. 1.50ct Basaltic Sapphire and 1.92ct Diamond 9ct White Gold Brooch - Antique Circa 1925

The antique sapphire and diamond brooch secures to the reverse with a hinged pin and clasp.

This antique brooch has been independently tested using state of the art technology (Niton XL2 Analyzer) and verified as 9 carat gold and platinum.

fig 3. An Art Deco 9ct white gold brooch featuring a central oval blue sapphire framed by geometric openwork set with round diamonds.
fig 3. 1.50ct Basaltic Sapphire and 1.92ct Diamond 9ct White Gold Brooch - Antique Circa 1925

This impressive antique sapphire and diamond brooch is supplied with an IDGL diamond and gemstone grading report card, in addition to a sapphire report card and certificate supplied by the Gemmological Certification Services, London*.

fig 4. An Art Deco 9ct white gold brooch featuring a central oval blue sapphire framed by geometric openwork set with round diamonds.
fig 4. 1.50ct Basaltic Sapphire and 1.92ct Diamond 9ct White Gold Brooch - Antique Circa 1925

This 1920s sapphire and diamond brooch in platinum is an exceptional gift for milestone birthdays, landmark anniversaries, retirement celebrations, Mother's Day or significant personal achievements. Its authentic 1920s provenance, refined platinum setting and timeless design also give it outstanding heirloom appeal, making it a meaningful piece to be treasured and passed down through generations. Whether worn on a lapel, dress, scarf or evening gown, this antique sapphire and diamond brooch is a timeless expression of style, craftsmanship and enduring sentiment.

fig 5. An Art Deco 9ct white gold brooch featuring a central oval blue sapphire framed by geometric openwork set with round diamonds.
fig 5. 1.50ct Basaltic Sapphire and 1.92ct Diamond 9ct White Gold Brooch - Antique Circa 1925

NOTE: * This documentation accredits the sapphire originating in Basaltic deposits and certifies that the gemstone shows no indications of heating.

Images do not always reflect the true colour and brilliance of gemstones and diamonds. The video however provides a truer representation of the actual colour and showcases each stone.

fig 6. An Art Deco 9ct white gold brooch featuring a central oval blue sapphire framed by geometric openwork set with round diamonds.
fig 6. 1.50ct Basaltic Sapphire and 1.92ct Diamond 9ct White Gold Brooch - Antique Circa 1925

Condition

This stunning antique brooch is exceptional quality, set with an impressive sapphire displaying fine colour, brilliance and presence; under magnification some very minor surface blemishes are visible, this does not detract from the aesthetically pleasing appearance.

fig 7. An Art Deco 9ct white gold brooch featuring a central oval blue sapphire framed by geometric openwork set with round diamonds.
fig 7. 1.50ct Basaltic Sapphire and 1.92ct Diamond 9ct White Gold Brooch - Antique Circa 1925

The impressive well colour matched diamonds display a fine white colour and brilliance.

The brooch is an exceptional gauge of gold and platinum and is in exceptional condition.

Reflections in photographs may detract from the true representation of this fine example of antique sapphire jewellery.

fig 8. An Art Deco 9ct white gold brooch featuring a central oval blue sapphire framed by geometric openwork set with round diamonds.
fig 8. 1.50ct Basaltic Sapphire and 1.92ct Diamond 9ct White Gold Brooch - Antique Circa 1925

Sapphire Quality

Origin Basaltic Deposit

Colour Blue

Cut Oval

Content 1.50 carats

Dimensions 7.70mm (length) x 5.90mm (width) x 3.50mm (depth)

Diamond Quality

Colour (average grades) I

Clarity (average grades) SI1

fig 9. An Art Deco 9ct white gold brooch featuring a central oval blue sapphire framed by geometric openwork set with round diamonds.
fig 9. 1.50ct Basaltic Sapphire and 1.92ct Diamond 9ct White Gold Brooch - Antique Circa 1925

Cut Eight

Content 1.92 carats

Number of Diamonds

80

Dimensions

Length of setting 4.7cm/1.85'

Width of setting 1.48cm/0.58'

Across pin 4.01cm/1.58'

Height of setting 4.92mm/0.19'

Weight

6.82 grams

Date: Circa 1925

SKU: C9857

Height
0.492cm (0.19")
Width
1.48cm (0.58")
Depth
4.7cm (1.85")
Date of Manufacture

AC Silver has dated this Art Deco Sapphire Brooch to the 1920s.

Reference Numbers
Sellingantiques Ref
SA1237189
Dealers Internal Ref
C9857
AC Silver
AC Silver
Sellingantiques verified Since Apr 2009

Welcome to ac silver antique silver and antique jewellery specialists since 1977

Dealer Profile

You can view the stock and full dealer information on the AC Silver Profile Page

Trade Associations

AC Silver is a registered member of LAPADA  CINOA

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An Art Deco 9ct white gold brooch featuring a central oval blue sapphire framed by geometric openwork set with round diamonds.
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Film
Film of 1.50ct Basaltic Sapphire and 1.92ct Diamond 9ct White Gold Brooch - Antique Circa 1925
Archive I An Art Deco 9ct white gold brooch featuring a central oval blue sapphire framed by geometric openwork set with round diamonds.

1.50ct Basaltic Sapphire and 1.92ct Diamond 9ct White Gold Brooch - Antique Circa 1925

Film
Archive II An Art Deco 9ct white gold brooch featuring a central oval blue sapphire framed by geometric openwork set with round diamonds. View II
Archive III An Art Deco 9ct white gold brooch featuring a central oval blue sapphire framed by geometric openwork set with round diamonds. View III
Archive IV An Art Deco 9ct white gold brooch featuring a central oval blue sapphire framed by geometric openwork set with round diamonds. View IV
Archive V An Art Deco 9ct white gold brooch featuring a central oval blue sapphire framed by geometric openwork set with round diamonds. View V
Archive VI An Art Deco 9ct white gold brooch featuring a central oval blue sapphire framed by geometric openwork set with round diamonds. View VI
Archive VII An Art Deco 9ct white gold brooch featuring a central oval blue sapphire framed by geometric openwork set with round diamonds. View VII
Archive VIII An Art Deco 9ct white gold brooch featuring a central oval blue sapphire framed by geometric openwork set with round diamonds. View VIII
Archive IX An Art Deco 9ct white gold brooch featuring a central oval blue sapphire framed by geometric openwork set with round diamonds. View IX
Archive X An Art Deco 9ct white gold brooch featuring a central oval blue sapphire framed by geometric openwork set with round diamonds. View X
Archive XI An Art Deco 9ct white gold brooch featuring a central oval blue sapphire framed by geometric openwork set with round diamonds. View XI
Archive XII An Art Deco 9ct white gold brooch featuring a central oval blue sapphire framed by geometric openwork set with round diamonds. View XII
Archive XIII An Art Deco 9ct white gold brooch featuring a central oval blue sapphire framed by geometric openwork set with round diamonds. View XIII
Enlarged Archival View
Telephone 0191 240 2645
Location
35B St Georges Terrace
Jesmond
Newcastle Upon Tyne
Tyne and Wear
NE2 2SU
United Kingdom
Dealer Profile Page sellingantiques.co.uk/ac
Verified Since Apr 2009
Items For Sale 413
Items Sold 110
AC Silver
AC Silver
Verified Since Apr 2009
View Dealer Info
Location: 35B St Georges Terrace, Jesmond, Newcastle Upon Tyne, Tyne and Wear, NE2 2SU, United Kingdom
Verified
Apr 2009
For Sale
413
Sold
110
An Art Deco 9ct white gold brooch featuring a central oval blue sapphire framed by geometric openwork set with round diamonds.
1.50ct Basaltic Sapphire and 1.92ct Diamond 9ct White Gold Brooch - Antique Circa 1925
Ref: SA1237189
An Art Deco 9ct white gold brooch featuring a central oval blue sapphire framed by geometric openwork set with round diamonds.
Detail View 1
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Archival Detail
Every single antique dealer on our platform is individually approved by our internal team. We verify their professional trade history, ethical standards, and photographic quality to ensure a secure, high-standard buying environment. Upon joining, every dealer agrees to a strict 9-point code of conduct. While issues can occasionally arise, our dealers typically resolve them swiftly and directly with the buyer. In fact, since our founding in 2002, Sellingantiques has only had to step in to help resolve an issue on roughly five occasions—a true testament to the quality of our dealers and their dedication to your happiness.
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Written by Sellingantiques from the dealer’s photographs and listing
  • ObjectBrooch
  • Period1900 - 1920
  • StyleArt Deco
  • Material9ct White Gold, Sapphire, Diamond
  • ColourSilver, Blue
  • MotifsGeometric openwork, Central oval gemstone, Scrollwork detailing, Millegrain borders
  • SizeH 0.492 cm (0 in) x W 1.48 cm (1 in) x D 4.7 cm (2 in)

An antique brooch from the 1920s Art Deco period, manufactured from 9ct white gold with a platinum setting. The silver-coloured piece measures 0.492 cm high, 1.48 cm wide, and 4.7 cm deep. It features an oval blue basaltic sapphire centrally secured in a four-claw mount, surrounded by geometric openwork, pierced scrolling motifs, and millegrain borders encrusted with eighty pavé-set eight-cut diamonds. The reverse incorporates a hinged pin and clasp hardware mechanism. Suitable for personal accessorising on clothing such as a lapel, dress, scarf, or evening gown, the brooch functions as wearable jewellery for milestones, anniversaries, and significant events. The visible details comprise a multifaceted blue stone, circular pavé-set diamond clusters, and openwork geometric metal frames.

Art Deco brooches from the 1920s are defined by strong geometric lines, symmetrical patterns, openwork metal settings, and the combined use of coloured gemstones alongside diamonds.

Jewellers of the 1920s typically used platinum, white gold, and yellow gold alongside natural sapphires, rubies, emeralds, and brilliant or single-cut diamonds in fine filigree settings.

Authentic pieces feature geometric precision, hand-carved openwork, millegrain edging on metal borders, period hallmarks, and gemstones set in platinum or early white gold.

An antique brooch can be attached to the lapel of a tailored blazer, fastened to a silk scarf, placed at the centre of a buttoned collar, or styled on a velvet ribbon around the neck.

Clean the brooch using warm water, mild soap, and a soft-bristled brush, avoiding harsh ultrasonic cleaners or chemicals. Store it in a lined box separately from other jewellery to prevent metal or gemstone abrasion.
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