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Mid Century 1.18 Carat Transitional Cut Diamond Engagement Ring, Circa 1950
Sold by Gatsby Jewellery Ltd
sold SA1134716
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 #SA1134716
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Mid Century 1.18 Carat Transitional Cut Diamond Engagement Ring, Circa 1950

1940 - 1960
Sold 25 July 2025 · Gatsby Jewellery Ltd
This “Mid Century 1.18 Carat Transitional Cut Diamond Engagement Ring, Circa 1950” 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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1 Carat Diamond Ring1950s Engagement RingClassic Engagement Ring Ask the dealer for something similar
Description

A high class vintage diamond engagement ring. The diamond in the centre - graded by IGI as E colour, SI1 clarity - is almost impossibly white and bright. The stone is set in a platinum six-claw collet with beautiful leaf-shaped detailing in the gallery, leading to a slim platinum shank.

Although IGI have described the cut as Round Brilliant, the diamond has many characteristics of an Old European Cut - slightly smaller table, cut culet, burnished girdle - making this a transitional cut (a very rare cut that bridged old European cut and round brilliant) rather than a modern round brilliant.

Accompanied by a diamond report from IGI.

Cut:? Transitional Cut.

Colour:? E.

Clarity:? SI1.

Carat:? 1.18.

Circa:? 1950.

Size:? L (UK) or 5 1/2 (US). Free sizing available.

Measurements:? The diamond is 6.64 x 6.74mm and sits 6.15mm from the finger.

Weight:? 3.22 grams.

Metal:? Platinum. Tested with a Niton DXL Precious Metal Analyzer.

Item # 213413S149

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

Gatsby Jewellery Ltd has dated this Transitional Cut Diamond Ring to the 1950s.

Reference Numbers
Sellingantiques Reference
SA1134716
Dealers Internal Reference
213413S149
Description
A high class vintage diamond engagement ring.
“
The diamond in the centre - graded by IGI as E colour, SI1 clarity - is almost impossibly white and bright.
Gatsby Jewellery Ltd

The stone is set in a platinum six-claw collet with beautiful leaf-shaped detailing in the gallery, leading to a slim platinum shank.

fig 1. A close-up view of a mid-century platinum engagement ring featuring a central transitional cut diamond set in a prong setting.
fig 1. Mid Century 1.18 Carat Transitional Cut Diamond Engagement Ring, Circa 1950

Although IGI have described the cut as Round Brilliant, the diamond has many characteristics of an Old European Cut - slightly smaller table, cut culet, burnished girdle - making this a transitional cut (a very rare cut that bridged old European cut and round brilliant) rather than a modern round brilliant.

fig 2. A close-up view of a mid-century platinum engagement ring featuring a central transitional cut diamond set in a prong setting.
fig 2. Mid Century 1.18 Carat Transitional Cut Diamond Engagement Ring, Circa 1950

Accompanied by a diamond report from IGI.

Cut:? Transitional Cut.

Colour:? E.

Clarity:? SI1.

Carat:? 1.18.

Circa:? 1950.

Size:? L (UK) or 5 1/2 (US). Free sizing available.

Measurements:? The diamond is 6.64 x 6.74mm and sits 6.15mm from the finger.

Weight:? 3.22 grams.

Metal:? Platinum. Tested with a Niton DXL Precious Metal Analyzer.

Item # 213413S149

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

Gatsby Jewellery Ltd has dated this Transitional Cut Diamond Ring to the 1950s.

Reference Numbers
Sellingantiques Ref
SA1134716
Dealers Internal Ref
213413S149
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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A close-up view of a mid-century platinum engagement ring featuring a central transitional cut diamond set in a prong setting. SOLD6+ MONTHS AGO
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Archive I A close-up view of a mid-century platinum engagement ring featuring a central transitional cut diamond set in a prong setting. SOLD6+ MONTHS AGO

Mid Century 1.18 Carat Transitional Cut Diamond Engagement Ring, Circa 1950

Archive II A close-up view of a mid-century platinum engagement ring featuring a central transitional cut diamond set in a prong setting. View II
Archive III A close-up view of a mid-century platinum engagement ring featuring a central transitional cut diamond set in a prong setting. View III
Archive IV A close-up view of a mid-century platinum engagement ring featuring a central transitional cut diamond set in a prong setting. View IV
Archive V A close-up view of a mid-century platinum engagement ring featuring a central transitional cut diamond set in a prong setting. View V
Archive VI A close-up view of a mid-century platinum engagement ring featuring a central transitional cut diamond set in a prong setting. View VI
Archive VII A close-up view of a mid-century platinum engagement ring featuring a central transitional cut diamond set in a prong setting. View VII
Archive VIII A close-up view of a mid-century platinum engagement ring featuring a central transitional cut diamond set in a prong setting. View VIII
Archive IX A close-up view of a mid-century platinum engagement ring featuring a central transitional cut diamond set in a prong setting. 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
A close-up view of a mid-century platinum engagement ring featuring a central transitional cut diamond set in a prong setting.
Mid Century 1.18 Carat Transitional Cut Diamond Engagement Ring, circa 1950
Ref: SA1134716
A close-up view of a mid-century platinum engagement ring featuring a central transitional cut diamond set in a prong setting.
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Cataloguer’s note

Written by Sellingantiques from the dealer’s photographs and listing
  • ObjectRings
  • Period1940 - 1960
  • StyleMid-Century
  • MaterialPlatinum, Diamond
  • ColourSilver
  • MotifsSolitaire setting, Prong mount, Tapered shoulders
  • SizeH 30 cm (12 in) x W 25 cm (10 in) x D 5 cm (2 in)

FAQs

A mid-century transitional cut diamond ring features a stone cut during the mid-20th century that bridges the gap between the traditional old European cut and the modern brilliant cut, typically displaying a smaller table and slightly larger culet.

Engagement rings from this era frequently utilise platinum or white gold to mount central diamonds, often paired with delicate accent stones or minimalist shoulders.

Authentication involves examining the diamond proportions under magnification for characteristics like an open culet and slightly wider facets, alongside checking for period-appropriate metal hallmarks and construction techniques.

This ring pairs well with both contemporary plain metal bands and vintage-inspired eternity rings, allowing the unique facet pattern of the central diamond to remain the focal point.

Preservation requires regular professional inspections of the prongs to ensure stone security, alongside gentle cleaning with warm water, mild soap, and a soft brush to maintain brilliance.
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