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Art Deco 1.00 Carat Old Cut Diamond Engagement Ring, 1930
Sold by Gatsby Jewellery Ltd
sold SA1134446
Sorry, but this item has been sold.
Gatsby Jewellery Ltd

Gatsby Jewellery Ltd

Sellingantiques Verified Since May 2014
Browse dealers 267 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 #SA1134446
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Art Deco 1.00 Carat Old Cut Diamond Engagement Ring, 1930

1920 - 1940
Sold 26 September 2025 · Gatsby Jewellery Ltd
This “Art Deco 1.00 Carat Old Cut Diamond Engagement Ring, 1930” found a buyer.

It was listed by Gatsby Jewellery Ltd. Sold pieces stay on Sellingantiques as a record of what has passed through, and the next one is rarely far away.

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Description

A truly lovely antique diamond engagement ring. The old mine cut diamond in the centre - weighing approximately 1.00 carat - is impressively white, bright and very lively. The stone is secured in a finely crafted platinum eight-claw coronet collet. The centre leaves of the tri-split shoulders are set with six (three each side) eight-cut diamonds, leading to a D-shaped 18k yellow gold shank.

Accompanied by an independent jewellery report from IGR.

Cut:? Old mine cut diamond in the centre, with eight cut diamonds in the shoulders.

Colour:? The centre is G. The sides range from F to G.

Clarity:? VS2 in the centre. The sides range from VS1 to VS2.

Carat:? The centre is approximately 1.00 carat, with a further approximate 0.07 carat in the shoulders.

Circa:? 1930.

Size:? N (UK) or 6 1/2 (US). Free sizing available.

Weight:? 3.43 grams.

Metal:? 18k yellow gold. The main diamond is set in platinum. Tested with a Niton DXL Precious Metal Analyzer.

Item # 118413S130

Physical Dimensions
Height
30cm (11.81")
Width
25cm (9.84")
Depth
5cm (1.97")
Declaration

Gatsby Jewellery Ltd has dated this Art Deco Diamond Ring to the 1930s.

Reference Numbers
Sellingantiques Reference
SA1134446
Dealers Internal Reference
118413S130
Description
A truly lovely antique diamond engagement ring. The old mine cut diamond in the centre - weighing approximately 1.00 carat - is impressively white, bright and very lively. The stone is secured in a finely crafted platinum eight-claw coronet collet.
“
The centre leaves of the tri-split shoulders are set with six (three each side) eight-cut diamonds, leading to a D-shaped 18k yellow gold shank.
Gatsby Jewellery Ltd
fig 1. An Art Deco diamond engagement ring featuring a central old cut diamond set in a mixed gold and platinum band with millegrain detailing.
fig 1. Art Deco 1.00 Carat Old Cut Diamond Engagement Ring, 1930

Accompanied by an independent jewellery report from IGR.

Cut:? Old mine cut diamond in the centre, with eight cut diamonds in the shoulders.

Colour:? The centre is G. The sides range from F to G.

Clarity:? VS2 in the centre. The sides range from VS1 to VS2.

fig 2. An Art Deco diamond engagement ring featuring a central old cut diamond set in a mixed gold and platinum band with millegrain detailing.
fig 2. Art Deco 1.00 Carat Old Cut Diamond Engagement Ring, 1930

Carat:? The centre is approximately 1.00 carat, with a further approximate 0.07 carat in the shoulders.

Circa:? 1930.

Size:? N (UK) or 6 1/2 (US). Free sizing available.

Weight:? 3.43 grams.

Metal:? 18k yellow gold. The main diamond is set in platinum. Tested with a Niton DXL Precious Metal Analyzer.

Item # 118413S130

Height
30cm (11.81")
Width
25cm (9.84")
Depth
5cm (1.97")
Date of Manufacture

Gatsby Jewellery Ltd has dated this Art Deco Diamond Ring to the 1930s.

Reference Numbers
Sellingantiques Ref
SA1134446
Dealers Internal Ref
118413S130
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 Art Deco diamond engagement ring featuring a central old cut diamond set in a mixed gold and platinum band with millegrain detailing. SOLD6+ MONTHS AGO
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Archive I An Art Deco diamond engagement ring featuring a central old cut diamond set in a mixed gold and platinum band with millegrain detailing. SOLD6+ MONTHS AGO

Art Deco 1.00 Carat Old Cut Diamond Engagement Ring, 1930

Archive II An Art Deco diamond engagement ring featuring a central old cut diamond set in a mixed gold and platinum band with millegrain detailing. View II
Archive III An Art Deco diamond engagement ring featuring a central old cut diamond set in a mixed gold and platinum band with millegrain detailing. View III
Archive IV An Art Deco diamond engagement ring featuring a central old cut diamond set in a mixed gold and platinum band with millegrain detailing. View IV
Archive V An Art Deco diamond engagement ring featuring a central old cut diamond set in a mixed gold and platinum band with millegrain detailing. View V
Archive VI An Art Deco diamond engagement ring featuring a central old cut diamond set in a mixed gold and platinum band with millegrain detailing. View VI
Archive VII An Art Deco diamond engagement ring featuring a central old cut diamond set in a mixed gold and platinum band with millegrain detailing. View VII
Archive VIII An Art Deco diamond engagement ring featuring a central old cut diamond set in a mixed gold and platinum band with millegrain detailing. View VIII
Archive IX An Art Deco diamond engagement ring featuring a central old cut diamond set in a mixed gold and platinum band with millegrain detailing. View IX
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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 267
Items Sold 2,976
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
267
Sold
2,976
An Art Deco diamond engagement ring featuring a central old cut diamond set in a mixed gold and platinum band with millegrain detailing.
Art Deco 1.00 Carat Old Cut Diamond Engagement Ring, 1930
Ref: SA1134446
An Art Deco diamond engagement ring featuring a central old cut diamond set in a mixed gold and platinum band with millegrain detailing.
Detail View 1
Detail View 2
Detail View 3
Detail View 4
Detail View 5
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Detail View 8
Archival Detail

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Cataloguer’s note

Written by Sellingantiques from the dealer’s photographs and listing
  • ObjectRings
  • Period1920 - 1940
  • StyleArt Deco
  • MaterialGold, Platinum, Diamond
  • ColourYellow Gold
  • MotifsOld cut diamond, Millegrain edge, Mixed metal setting, Geometric shoulders
  • SizeH 30 cm (12 in) x W 25 cm (10 in) x D 5 cm (2 in)

FAQs

Art Deco jewellery, prominent from the 1920s to the 1930s, is characterised by geometric precision, stylised motifs, and a strong architectural influence, frequently contrasting platinum with yellow gold.

Engagement rings from this period commonly featured platinum settings to securely hold diamonds, often paired with yellow gold bands, alongside hand-cut gemstones such as old European or old mine cut diamonds.

Authentic pieces typically exhibit period-correct hand-cut stones with larger facets and open culets, handmade metalwork with delicate millegrain detailing, and occasionally historical hallmarks or makers marks.

Pairing an antique engagement ring with a contemporary plain metal band creates a sophisticated contrast, allowing the historical craftsmanship and unique diamond cut to remain the focal point.

Vintage jewellery should be cleaned gently using warm soapy water and a soft brush, avoiding harsh ultrasonic cleaners that might compromise fragile antique settings or older prongs.
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