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ID #SA1243056
FOR SALE
£745
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Art Deco Blue Sapphire and Diamond Cluster 18ct Yellow Gold Ring
For sale by Lancastrian Jewellers
for sale €872     $946
£745
Lancastrian Jewellers

Lancastrian Jewellers

Sellingantiques Verified Since Jun 2022
Browse dealers 215 items
  • About Us
    We are a third generation jewellers in the north of england, UK. Specialising in quality antique, vintage and fine jewellery
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Id #SA1243056
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Art Deco Blue Sapphire and Diamond Cluster 18ct Yellow Gold Ring

1900 - 1920
Description

This exquisite Art Deco period ring features a central blue sapphire, surrounded by four diamonds in a rhombus-like formation, set in platinum and 18ct yellow gold.

The Blue Sapphire is a wonderful bright blue, and the Diamonds complement it wonderfully.

This sparkling period ring would make a great engagement ring or a superb addition to any collection.

STONES

Diamond and Sapphire

METAL

18ct Yellow Gold and Platinum

RING SIZE

UK- N / US - 6.75

MEASUREMENTS

Ring face measures 9mm x 9mm

Sapphire measures 3.58mm across

WEIGHT

2.14 grams

HALLMARKS

18CT

PLAT

CONDITION

This stunning Art Deco ring is in excellent condition. The stones are secure and free from damage, and the gold has a bright shine. This remarkable piece would make a fantastic engagement ring or a valued addition to any collection.

Item Number - SD1148

Date of Manufacture

Lancastrian Jewellers has dated this Art Deco Sapphire Ring to the 1920s.

Independent Date Check ID 09701392
Dealer's Item Date1920s
Sellingantiques Date1920s
Sellingantiques agingItem 90-110 years old
Test ResultsPassed dating check
Why Sellingantiques dated this piece to THE 1920s:
Lozenge-shaped head with fine millegrain border: geometric styling from the Art Deco period.
Internal stamp reads 18CT PLAT: standard British stamping before compulsory platinum hallmarks in 1975.
Pierced openwork gallery under the head: typical fine metalwork of the era.
Gentle softening to the edges of the gold shank: many years of light wear.

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 Reference
SA1243056
Dealers Internal Reference
SD1148
Description
This exquisite Art Deco period ring features a central blue sapphire, surrounded by four diamonds in a rhombus-like formation, set in platinum and 18ct yellow gold.

The Blue Sapphire is a wonderful bright blue, and the Diamonds complement it wonderfully.

“
This sparkling period ring would make a great engagement ring or a superb addition to any collection.
Lancastrian Jewellers
fig 1. An Art Deco ring displaying a square blue sapphire surrounded by diamonds in a diamond-shaped geometric setting on an 18ct yellow gold band.
fig 1. Art Deco Blue Sapphire and Diamond Cluster 18ct Yellow Gold Ring

STONES

Diamond and Sapphire

METAL

18ct Yellow Gold and Platinum

RING SIZE

UK- N / US - 6.75

MEASUREMENTS

Ring face measures 9mm x 9mm

Sapphire measures 3.58mm across

WEIGHT

2.14 grams

HALLMARKS

18CT

PLAT

CONDITION

This stunning Art Deco ring is in excellent condition. The stones are secure and free from damage, and the gold has a bright shine. This remarkable piece would make a fantastic engagement ring or a valued addition to any collection.

Item Number - SD1148

Date of Manufacture

Lancastrian Jewellers has dated this Art Deco Sapphire Ring to the 1920s.

Independent Date Report ID 09701392
Dealer's Item Date1920s
Sellingantiques dating1920s
Sellingantiques agingItem 90-110 years old
Test ResultsPassed dating check
Why Sellingantiques dated this piece to the 1920s:
Lozenge-shaped head with fine millegrain border: geometric styling from the Art Deco period.
Internal stamp reads 18CT PLAT: standard British stamping before compulsory platinum hallmarks in 1975.
Pierced openwork gallery under the head: typical fine metalwork of the era.
Gentle softening to the edges of the gold shank: many years of light wear.

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
SA1243056
Dealers Internal Ref
SD1148
Lancastrian Jewellers
Lancastrian Jewellers
Sellingantiques verified Since Jun 2022

We are a third generation jewellers in the north of england, UK. Specialising in quality antique, vintage and fine jewellery

Dealer Profile

You can view the stock and full dealer information on the Lancastrian Jewellers Profile Page

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An Art Deco ring displaying a square blue sapphire surrounded by diamonds in a diamond-shaped geometric setting on an 18ct yellow gold band.
1 / 10
Archive I An Art Deco ring displaying a square blue sapphire surrounded by diamonds in a diamond-shaped geometric setting on an 18ct yellow gold band.

Art Deco Blue Sapphire and Diamond Cluster 18ct Yellow Gold Ring

Archive II An Art Deco ring displaying a square blue sapphire surrounded by diamonds in a diamond-shaped geometric setting on an 18ct yellow gold band. View II
Archive III An Art Deco ring displaying a square blue sapphire surrounded by diamonds in a diamond-shaped geometric setting on an 18ct yellow gold band. View III
Archive IV An Art Deco ring displaying a square blue sapphire surrounded by diamonds in a diamond-shaped geometric setting on an 18ct yellow gold band. View IV
Archive V An Art Deco ring displaying a square blue sapphire surrounded by diamonds in a diamond-shaped geometric setting on an 18ct yellow gold band. View V
Archive VI An Art Deco ring displaying a square blue sapphire surrounded by diamonds in a diamond-shaped geometric setting on an 18ct yellow gold band. View VI
Archive VII An Art Deco ring displaying a square blue sapphire surrounded by diamonds in a diamond-shaped geometric setting on an 18ct yellow gold band. View VII
Archive VIII An Art Deco ring displaying a square blue sapphire surrounded by diamonds in a diamond-shaped geometric setting on an 18ct yellow gold band. View VIII
Archive IX An Art Deco ring displaying a square blue sapphire surrounded by diamonds in a diamond-shaped geometric setting on an 18ct yellow gold band. View IX
Archive X An Art Deco ring displaying a square blue sapphire surrounded by diamonds in a diamond-shaped geometric setting on an 18ct yellow gold band. View X
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Lancastrian Jewellers

Lancastrian Jewellers
Telephone 07527 577305
Location
Dalton House
9 Dalton Square
Lancaster
Lancashire
LA1 1WD
United Kingdom
Dealer Profile Page sellingantiques.co.uk/lancastrianjewellers
Verified Since Jun 2022
Items For Sale 215
Items Sold 177
Lancastrian Jewellers
Lancastrian Jewellers
Verified Since Jun 2022
View Dealer Info
Location: Dalton House, 9 Dalton Square, Lancaster, Lancashire, LA1 1WD, United Kingdom
Profile: sellingantiques.co.uk/lancastrianjewellers
Verified
Jun 2022
For Sale
215
Sold
177
An Art Deco ring displaying a square blue sapphire surrounded by diamonds in a diamond-shaped geometric setting on an 18ct yellow gold band.
Art Deco Blue Sapphire and Diamond Cluster 18ct Yellow Gold Ring
Ref: SA1243056
An Art Deco ring displaying a square blue sapphire surrounded by diamonds in a diamond-shaped geometric setting on an 18ct yellow gold band.
Detail View 1
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Archival Detail

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Cataloguer’s note

Written by Sellingantiques from the dealer’s photographs and listing
  • ObjectRings
  • Period1900 - 1920
  • StyleArt Deco
  • Material18ct Gold, Sapphire, Diamond
  • ColourBlue, Gold
  • MotifsSquare cut sapphire, Geometric rhombus setting, Millegrain edging, Diamond accents

FAQs

Art Deco jewellery, produced primarily during the 1920s and 1930s, is defined by geometric shapes, clean symmetrical lines, precise stone setting, and contrasting gemstone colour combinations.

Craftsmen frequently used platinum or white precious metal tops mounted on 18ct yellow gold bands, setting coloured gemstones like sapphires alongside accent diamonds with millegrain edging.

Authentic pieces generally display period hallmark stamps, hand-cut gemstones such as step-cut or calibre-cut sapphires, fine hand-applied millegrain detailing, and layered white and yellow metal construction.

A geometric gemstone ring functions as a standalone focal piece or can be paired with plain platinum or yellow gold bands to create a layered, modern stack.

Clean gently using warm water, mild liquid soap, and a soft brush, avoiding ultrasonic cleaners or chemical solutions that could disturb delicate claw settings or vintage metalwork.
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