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ID #SA1232468
FOR SALE
£575
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Antique 0.30ct Old Cut Diamond Square Solitaire 18ct Gold Engagement Ring
Lancastrian Jewellers
for sale €673     $730
£575
Lancastrian Jewellers

Lancastrian Jewellers

Sellingantiques Verified Since Jun 2022
View Dealers Stock Page
  • 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 #SA1232468
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Antique 0.30ct Old Cut Diamond Square Solitaire 18ct Gold Engagement Ring

1900 - 1920
Description

This stunning Art Deco solitaire ring boasts a dazzling old-cut diamond weighing approximately 0.30ct. It sparkles with immense beauty and fire and has superb SI2 clarity – M colour.

The band is hallmarked for 18ct gold and platinum on the inside. The ring also features wonderful tapered shoulders towards to the square setting, adding a true Art Deco finish.

Whether it's for a proposal or to add a touch of elegance to your collection, this ring is a versatile and valuable investment that will surely make a statement.

STONES

Natural Diamond - 0.30ct

METAL

18ct Yellow Gold & Platinum

WEIGHT

2.54 grams

HALLMARKS

18CT PLAT

RING SIZE

UK- Q 1/2 / US - 8.5

MEASUREMENTS

Diamond measures 3.58mm across

square setting measures 5.7mm x 5.7mm

Stands 4.6mm off finger

CONDITION

This stunning diamond solitaire engagement ring remains in excellent condition. It features a lovely-sized diamond held securely within its settings and looks stunning when worn. It is a perfect ring for proposing to your loved one and would make a superb addition to your jewellery collection.

Item Number - 11675

Declaration

Lancastrian Jewellers has dated this Antique Diamond Solitaire Ring to the 1920s.

Reference Numbers
Sellingantiques Reference
SA1232468
Dealers Internal Reference
11675
Description
This stunning Art Deco solitaire ring boasts a dazzling old-cut diamond weighing approximately 0.30ct. It sparkles with immense beauty and fire and has superb SI2 clarity – M colour.

The band is hallmarked for 18ct gold and platinum on the inside.

“
The ring also features wonderful tapered shoulders towards to the square setting, adding a true Art Deco finish.
Lancastrian Jewellers
fig 1. An antique 18ct yellow gold solitaire ring holding a central round old cut diamond within a square white metal setting.
fig 1. Antique 0.30ct Old Cut Diamond Square Solitaire 18ct Gold Engagement Ring

Whether it's for a proposal or to add a touch of elegance to your collection, this ring is a versatile and valuable investment that will surely make a statement.

STONES

Natural Diamond - 0.30ct

METAL

18ct Yellow Gold & Platinum

fig 2. An antique 18ct yellow gold solitaire ring holding a central round old cut diamond within a square white metal setting.
fig 2. Antique 0.30ct Old Cut Diamond Square Solitaire 18ct Gold Engagement Ring

WEIGHT

2.54 grams

HALLMARKS

18CT PLAT

RING SIZE

UK- Q 1/2 / US - 8.5

MEASUREMENTS

Diamond measures 3.58mm across

square setting measures 5.7mm x 5.7mm

Stands 4.6mm off finger

CONDITION

This stunning diamond solitaire engagement ring remains in excellent condition. It features a lovely-sized diamond held securely within its settings and looks stunning when worn. It is a perfect ring for proposing to your loved one and would make a superb addition to your jewellery collection.

Item Number - 11675

Date of Manufacture

Lancastrian Jewellers has dated this Antique Diamond Solitaire Ring to the 1920s.

Reference Numbers
Sellingantiques Ref
SA1232468
Dealers Internal Ref
11675
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 antique 18ct yellow gold solitaire ring holding a central round old cut diamond within a square white metal setting.
1 / 13
Archive I An antique 18ct yellow gold solitaire ring holding a central round old cut diamond within a square white metal setting.

Antique 0.30ct Old Cut Diamond Square Solitaire 18ct Gold Engagement Ring

Archive II An antique 18ct yellow gold solitaire ring holding a central round old cut diamond within a square white metal setting. View II
Archive III An antique 18ct yellow gold solitaire ring holding a central round old cut diamond within a square white metal setting. View III
Archive IV An antique 18ct yellow gold solitaire ring holding a central round old cut diamond within a square white metal setting. View IV
Archive V An antique 18ct yellow gold solitaire ring holding a central round old cut diamond within a square white metal setting. View V
Archive VI An antique 18ct yellow gold solitaire ring holding a central round old cut diamond within a square white metal setting. View VI
Archive VII An antique 18ct yellow gold solitaire ring holding a central round old cut diamond within a square white metal setting. View VII
Archive VIII An antique 18ct yellow gold solitaire ring holding a central round old cut diamond within a square white metal setting. View VIII
Archive IX An antique 18ct yellow gold solitaire ring holding a central round old cut diamond within a square white metal setting. View IX
Archive X An antique 18ct yellow gold solitaire ring holding a central round old cut diamond within a square white metal setting. View X
Archive XI An antique 18ct yellow gold solitaire ring holding a central round old cut diamond within a square white metal setting. View XI
Archive XII An antique 18ct yellow gold solitaire ring holding a central round old cut diamond within a square white metal setting. View XII
Archive XIII An antique 18ct yellow gold solitaire ring holding a central round old cut diamond within a square white metal setting. View XIII
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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 210
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
210
Sold
177
An antique 18ct yellow gold solitaire ring holding a central round old cut diamond within a square white metal setting.
Antique 0.30ct Old Cut Diamond Square Solitaire 18ct Gold Engagement Ring
Ref: SA1232468
An antique 18ct yellow gold solitaire ring holding a central round old cut diamond within a square white metal setting.
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Antiques are the ultimate green purchase. By choosing historical pieces over newly manufactured goods, you completely eliminate the carbon footprint of modern mass production while preserving exceptional, timeless craftsmanship.

FAQs

Square-set diamond solitaires from the early twentieth century typically feature an old cut diamond housed within a square illusion or box setting, designed to give the gemstone a geometric profile characteristic of the Edwardian and Art Deco periods.

These rings were commonly constructed with an 18ct yellow gold band paired with a platinum or white gold setting to hold the central diamond, maximising light reflection while retaining structural strength.

Authenticity can be verified through historical hallmarks stamped inside the shank, as well as the presence of hand-cut diamonds featuring small tables, high crowns, and open culets typical of period diamond cutting methods.

Antique jewellery can be styled daily alongside modern slim gold stacking bands or presented in an authentic vintage velvet ring box on a dressing table or vanity tray as a decorative accent.

Clean the ring gently using warm water, mild detergent, and a soft-bristled toothbrush to clear debris beneath the stone setting, and schedule periodic professional checks to ensure claws remain secure.
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