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ID #SA1210198
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£995
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Vintage Diamond Trilogy Ring 18ct Gold Diamond Three Stone Engagement Ring
The Chelsea Bijouterie Ltd
for sale €1,164     $1,264
£995

The Chelsea Bijouterie Ltd

Sellingantiques Verified Since Nov 2018
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Id #SA1210198
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Vintage Diamond Trilogy Ring 18ct Gold Diamond Three Stone Engagement Ring

1940 - 1960
Description

A beautifully balanced and enduringly elegant vintage diamond trilogy ring, dating to the 1950s and crafted in the classic manner with a platinum crown and warm 18ct yellow gold shank.

Set with three bright brilliant cut diamonds, this ring captures the timeless symbolism of past, present and future—making it a deeply meaningful choice for an engagement or special anniversary. The stones are perfectly arranged across the finger, each claw set to allow maximum light to pass through, creating a lively and continuous sparkle.

The platinum setting enhances the brightness of the diamonds, while the softly tapered yellow gold band provides a graceful and comfortable fit. Understated yet refined, this is a piece that will never fall out of fashion.

A true mid-century classic, elegant on the hand and effortlessly wearable every day.

Details

Three brilliant cut diamonds

Total diamond weight: approx. 0.40 carat

Diamond colour: H

Diamond clarity: VS1

Centre diamond: approx. 3.8mm

Outer diamonds: approx. 3.5mm each

Total head width: 12.5mm

Height off finger: 5mm

Setting: platinum crown

Shank: tests as 18ct yellow gold

Weight: 2.5 grams

Ring size: L (UK) – can be resized

Date: circa 1950s (mid 20th century)

Condition: excellent original condition

Presentation box included

Our ref: 2614

Please visit our website to view our full collection:

https://www.the-chelsea-bijouterie.com

Payment:

By Debit/ Credit Card, PayPal or Bank Transfer

Shipping:

We post worldwide free of charge

All items are sent fully insured, tracked and signed for.

Terms of Sale:

We are totally committed to customer satisfaction. We take great care to give accurate and detailed descriptions accompanied by high definition photos. If you are not entirely happy with your purchase we will gladly offer you a full refund. Please return within 14 days of receipt of your purchase.

About Us:

We have years of knowledge and experience in dealing in antiques and antique & designer jewellery. We are committed to giving exceptional customer service. The Chelsea Bijouterie aims to offer beautiful and interesting items at affordable prices.

Declaration

The Chelsea Bijouterie Ltd has dated this Diamond Trilogy Engagement Ring to the 1950s.

Reference Numbers
Sellingantiques Reference
SA1210198
Dealers Internal Reference
2614
Description
A beautifully balanced and enduringly elegant vintage diamond trilogy ring, dating to the 1950s and crafted in the classic manner with a platinum crown and warm 18ct yellow gold shank.
Set with three bright brilliant cut diamonds, this ring captures the timeless symbolism of past, present and future—making it a deeply meaningful choice for an engagement or special anniversary.
The Chelsea Bijouterie Ltd

The stones are perfectly arranged across the finger, each claw set to allow maximum light to pass through, creating a lively and continuous sparkle.

fig 1. A three-stone round diamond trilogy ring set in white metal claw mounts on an 18ct yellow gold band.
fig 1. Vintage Diamond Trilogy Ring 18ct Gold Diamond Three Stone Engagement Ring

The platinum setting enhances the brightness of the diamonds, while the softly tapered yellow gold band provides a graceful and comfortable fit. Understated yet refined, this is a piece that will never fall out of fashion.

fig 2. A three-stone round diamond trilogy ring set in white metal claw mounts on an 18ct yellow gold band.
fig 2. Vintage Diamond Trilogy Ring 18ct Gold Diamond Three Stone Engagement Ring

A true mid-century classic, elegant on the hand and effortlessly wearable every day.

Details

Three brilliant cut diamonds

Total diamond weight: approx. 0.40 carat

Diamond colour: H

Diamond clarity: VS1

Centre diamond: approx. 3.8mm

fig 3. A three-stone round diamond trilogy ring set in white metal claw mounts on an 18ct yellow gold band.
fig 3. Vintage Diamond Trilogy Ring 18ct Gold Diamond Three Stone Engagement Ring

Outer diamonds: approx. 3.5mm each

Total head width: 12.5mm

Height off finger: 5mm

Setting: platinum crown

Shank: tests as 18ct yellow gold

Weight: 2.5 grams

Ring size: L (UK) – can be resized

Date: circa 1950s (mid 20th century)

fig 4. A three-stone round diamond trilogy ring set in white metal claw mounts on an 18ct yellow gold band.
fig 4. Vintage Diamond Trilogy Ring 18ct Gold Diamond Three Stone Engagement Ring

Condition: excellent original condition

Presentation box included

Our ref: 2614

Please visit our website to view our full collection:

https://www.the-chelsea-bijouterie.com

Payment:

By Debit/ Credit Card, PayPal or Bank Transfer

fig 5. A three-stone round diamond trilogy ring set in white metal claw mounts on an 18ct yellow gold band.
fig 5. Vintage Diamond Trilogy Ring 18ct Gold Diamond Three Stone Engagement Ring

Shipping:

We post worldwide free of charge

All items are sent fully insured, tracked and signed for.

Terms of Sale:

We are totally committed to customer satisfaction. We take great care to give accurate and detailed descriptions accompanied by high definition photos. If you are not entirely happy with your purchase we will gladly offer you a full refund. Please return within 14 days of receipt of your purchase.

fig 6. A three-stone round diamond trilogy ring set in white metal claw mounts on an 18ct yellow gold band.
fig 6. Vintage Diamond Trilogy Ring 18ct Gold Diamond Three Stone Engagement Ring

About Us:

We have years of knowledge and experience in dealing in antiques and antique & designer jewellery. We are committed to giving exceptional customer service. The Chelsea Bijouterie aims to offer beautiful and interesting items at affordable prices.

Date of Manufacture

The Chelsea Bijouterie Ltd has dated this Diamond Trilogy Engagement Ring to the 1950s.

Reference Numbers
Sellingantiques Ref
SA1210198
Dealers Internal Ref
2614
The Chelsea Bijouterie Ltd
Sellingantiques verified Since Nov 2018
Dealer Profile

You can view the stock and full dealer information on the The Chelsea Bijouterie Ltd Profile Page

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A three-stone round diamond trilogy ring set in white metal claw mounts on an 18ct yellow gold band.
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Archive I A three-stone round diamond trilogy ring set in white metal claw mounts on an 18ct yellow gold band.

Vintage Diamond Trilogy Ring 18ct Gold Diamond Three Stone Engagement Ring

Archive II A three-stone round diamond trilogy ring set in white metal claw mounts on an 18ct yellow gold band. View II
Archive III A three-stone round diamond trilogy ring set in white metal claw mounts on an 18ct yellow gold band. View III
Archive IV A three-stone round diamond trilogy ring set in white metal claw mounts on an 18ct yellow gold band. View IV
Archive V A three-stone round diamond trilogy ring set in white metal claw mounts on an 18ct yellow gold band. View V
Archive VI A three-stone round diamond trilogy ring set in white metal claw mounts on an 18ct yellow gold band. View VI
Archive VII A three-stone round diamond trilogy ring set in white metal claw mounts on an 18ct yellow gold band. View VII
Archive VIII A three-stone round diamond trilogy ring set in white metal claw mounts on an 18ct yellow gold band. View VIII
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Telephone 07949 058 591
Location
85 Great Portland Street
London
W1W 7LT
United Kingdom
Verified Since Nov 2018
Items For Sale 173
Items Sold 873
The Chelsea Bijouterie Ltd
Verified Since Nov 2018
View Dealer Info
Location: 85 Great Portland Street, London, W1W 7LT, United Kingdom
Verified
Nov 2018
For Sale
173
Sold
873
A three-stone round diamond trilogy ring set in white metal claw mounts on an 18ct yellow gold band.
Vintage Diamond Trilogy Ring 18ct Gold Diamond Three Stone Engagement Ring
Ref: SA1210198
A three-stone round diamond trilogy ring set in white metal claw mounts on an 18ct yellow gold band.
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Archival Detail
Every single antique dealer on our platform is individually approved by our internal team. We verify their professional trade history, ethical standards, and photographic quality to ensure a secure, high-standard buying environment. Upon joining, every dealer agrees to a strict 9-point code of conduct. While issues can occasionally arise, our dealers typically resolve them swiftly and directly with the buyer. In fact, since our founding in 2002, Sellingantiques has only had to step in to help resolve an issue on roughly five occasions—a true testament to the quality of our dealers and their dedication to your happiness.
Our dealers are highly experienced in packing and shipping fragile, high-value antiques. Because you are in direct contact with the dealer, you will be able to easily go through all available shipping and insurance options together to ensure your item arrives safely.
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.

A trilogy ring features three gemstones arranged horizontally in a row, traditionally symbolising a couples past, present, and future together.

Vintage trilogy rings are typically constructed using 18ct yellow gold or platinum, featuring prong or bezel settings designed to secure brilliant cut diamonds.

Authentic pieces can be verified by examining official metal purity hallmarks inside the band, evaluating stone cut styles, and checking structural wear patterns on the settings.

A classic diamond trilogy ring pairs seamlessly with a plain gold wedding band or can be layered alongside narrow diamond eternity bands for a modern stacked aesthetic.

Clean the piece gently using warm water, mild soap, and a soft-bristled brush, and have the settings inspected regularly by a professional jeweller to ensure stone security.
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