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ID #SA1122197
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Art Deco 1.35 Carat Old Cut Diamond Engagement Ring, Circa 1930
Sold by Gatsby Jewellery Ltd
sold SA1122197
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.
Id #SA1122197
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Art Deco 1.35 Carat Old Cut Diamond Engagement Ring, Circa 1930

1920 - 1940
Sold 11 December 2025 · Gatsby Jewellery Ltd
This “Art Deco 1.35 Carat Old Cut Diamond Engagement Ring, Circa 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.

See more rings for sale Ask the dealer for something similar
Description

A beautiful and important diamond. Because of where they were mined, it's neigh-on impossible to find a colourless antique diamond, especially one as large as this. Graded at D colour, this stone positively glows - and is clean to the naked eye despite its SI2 clarity grading. The diamond is secured in an unfussy platinum mount, making the solely on the diamond: four claws, simple detailing in the gallery, and sitting on a slim platinum shank. A real treasure.

Accompanied by a Diamond Grading Report from EGL Platinum.

Cut:? Old European cut.

Colour:? D.

Clarity:? SI2. (Eye clean.)

Carat:? 1.35.

Circa:? 1930.

Size:? I(i) 1/2 (UK) or 4.5 (US). Free sizing available.

Measurements:? The diamond is 7.02 x 6.76mm. Sits 7.0mm from the finger.

Weight:? 3.28 grams.

Metal:? Platinum. French hallmarks still faintly visible on the band, and the ring has been tested with a Niton DXL Precious Metal Analyzer.

Item # 312213S273

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
SA1122197
Dealers Internal Reference
312213S273
Description
A beautiful and important diamond.
“
Because of where they were mined, it's neigh-on impossible to find a colourless antique diamond, especially one as large as this.
Gatsby Jewellery Ltd

Graded at D colour, this stone positively glows - and is clean to the naked eye despite its SI2 clarity grading. The diamond is secured in an unfussy platinum mount, making the solely on the diamond: four claws, simple detailing in the gallery, and sitting on a slim platinum shank. A real treasure.

fig 1. An Art Deco platinum engagement ring featuring a prominent round old-cut diamond set in a detailed gallery.
fig 1. Art Deco 1.35 Carat Old Cut Diamond Engagement Ring, Circa 1930

Accompanied by a Diamond Grading Report from EGL Platinum.

Cut:? Old European cut.

Colour:? D.

Clarity:? SI2. (Eye clean.)

Carat:? 1.35.

Circa:? 1930.

Size:? I(i) 1/2 (UK) or 4.5 (US). Free sizing available.

fig 2. An Art Deco platinum engagement ring featuring a prominent round old-cut diamond set in a detailed gallery.
fig 2. Art Deco 1.35 Carat Old Cut Diamond Engagement Ring, Circa 1930

Measurements:? The diamond is 7.02 x 6.76mm. Sits 7.0mm from the finger.

Weight:? 3.28 grams.

Metal:? Platinum. French hallmarks still faintly visible on the band, and the ring has been tested with a Niton DXL Precious Metal Analyzer.

Item # 312213S273

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
SA1122197
Dealers Internal Ref
312213S273
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 platinum engagement ring featuring a prominent round old-cut diamond set in a detailed gallery. SOLD6+ MONTHS AGO
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Archive I An Art Deco platinum engagement ring featuring a prominent round old-cut diamond set in a detailed gallery. SOLD6+ MONTHS AGO

Art Deco 1.35 Carat Old Cut Diamond Engagement Ring, Circa 1930

Archive II An Art Deco platinum engagement ring featuring a prominent round old-cut diamond set in a detailed gallery. View II
Archive III An Art Deco platinum engagement ring featuring a prominent round old-cut diamond set in a detailed gallery. View III
Archive IV An Art Deco platinum engagement ring featuring a prominent round old-cut diamond set in a detailed gallery. View IV
Archive V An Art Deco platinum engagement ring featuring a prominent round old-cut diamond set in a detailed gallery. View V
Archive VI An Art Deco platinum engagement ring featuring a prominent round old-cut diamond set in a detailed gallery. View VI
Archive VII An Art Deco platinum engagement ring featuring a prominent round old-cut diamond set in a detailed gallery. View VII
Archive VIII An Art Deco platinum engagement ring featuring a prominent round old-cut diamond set in a detailed gallery. View VIII
Archive IX An Art Deco platinum engagement ring featuring a prominent round old-cut diamond set in a detailed gallery. 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 platinum engagement ring featuring a prominent round old-cut diamond set in a detailed gallery.
Art Deco 1.35 Carat Old Cut Diamond Engagement Ring, circa 1930
Ref: SA1122197
An Art Deco platinum engagement ring featuring a prominent round old-cut diamond set in a detailed gallery.
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Cataloguer’s note

Written by Sellingantiques from the dealer’s photographs and listing
  • ObjectRings
  • Period1920 - 1940
  • StyleArt Deco
  • MaterialPlatinum, Diamond
  • ColourSilver
  • MotifsOld cut diamond, Geometric gallery, Plain shank
  • SizeH 30 cm (12 in) x W 25 cm (10 in) x D 5 cm (2 in)

FAQs

Art Deco jewellery, prominent during the 1920s and 1930s, is characterised by geometric precision, stylised motifs, and a preference for platinum paired with high-clarity diamonds.

Traditional construction from this era heavily favoured platinum for its strength and bright white lustre, often complemented by white gold or subtle geometric filigree work.

Authentic pieces often feature hand-cut stones such as old European or old mine cuts, alongside genuine period hallmarks, hand-finished settings, and signs of historical wear.

An antique ring can be paired with a plain contemporary platinum band to highlight the unique facet pattern of the old-cut centre stone without visual competition.

Regular professional checks on the settings and prongs are essential, alongside gentle cleaning with warm soapy water and a soft brush to prevent residue buildup.
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