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ID #SA1237618
FOR SALE
£24,950
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4.55ct Diamond and Platinum Trilogy Ring - Antique and Vintage
For sale by AC Silver
for sale €29,192     $31,687
£24,950
AC Silver

AC Silver

Sellingantiques Verified Since Apr 2009
Browse dealers 415 items
  • About Us
    Welcome to ac silver antique silver and antique jewellery specialists since 1977
  • Trade Associations
    AC Silver is a registered member of LAPADA  CINOA
Id #SA1237618
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4.55ct Diamond and Platinum Trilogy Ring - Antique and Vintage

1920 - 1940
For Sale by AC Silver
Description

A stunning, fine and impressive 4.55 carat diamond and platinum trilogy ring; part of our engagement rings collection.

This stunning, fine and impressive diamond trilogy ring has been crafted in platinum.

The vintage (circa 1945) pierced decorated setting is embellished with an antique (circa 1900) 2.11ct Old European cut diamond, four-claw set in subtle relief to the centre, flanked with a 1.23ct and 1.21ct Old European cut diamond.

The tapering ring shoulders and sides of the setting are embellished with finely engraved details in the Art Deco manner, integrating with the main setting and continuing seamlessly with the ring shank.

This stunning diamond engagement ring is hallmarked to the interior with the platinum mark (95% PLAT) and has been independently tested using state of the art technology (Niton XL2 Analyzer) and verified as platinum.

This platinum three stone ring is supplied with three IDGL diamond grading certificates.

Featuring three stunning diamonds with an impressive combined weight of 4.5 carats, the trilogy design beautifully symbolises a couple's past, present, and future together, making it one of the most meaningful ring styles. This remarkable ring is an outstanding choice for engagements, landmark anniversaries, vow renewals, or milestone celebrations, combining breath-taking brilliance with enduring symbolism.

Images do not always reflect the true colour and brilliance of gemstones and diamonds. The video however provides a truer representation of the actual colour and showcases each stone in this platinum three stone diamond ring.

Condition

This impressive trilogy dress ring is exceptional quality, set with three stunning diamonds displaying a fine white colour, brilliance and presence.

The ring is an exceptional gauge of platinum and is in exceptional condition, with a very clear hallmark to the interior of the shank.

The decoration to one side of the gallery setting has minor wear, indicating the ring has been sat against another; this does not detract from the aesthetically pleasing appearance of piece.

Reflections in photographs may detract from the true representation of this stunning 4.5 carat diamond trilogy ring in platinum.

Diamond Quality

Feature Diamond One

Colour K

Clarity VS2

Cut Old European

Content 2.11 carats

Dimensions 7.91mm (length) x 7.89mm (width) x 5.52mm (depth)

Feature Diamond Two

Colour I

Clarity VS2

Cut Old European

Content 1.23 carats

Dimensions 6.12mm (length) x 6.09mm (width) x 4.13mm (depth)

Feature Diamond Three

Colour I

Clarity SI1

Cut Old European

Content 1.21 carats

Dimensions 6.11mm (length) x 6.08mm (width) x 4.13mm (depth)

Total Diamond Content

4.55 carats

Number of Diamonds

3

Dimensions

Length of setting 1.88cm/0.74'

Width of setting 7.95mm/0.31'

Height of setting 8.03mm/0.32'

Ring Size

UK Size L

USA Size 5 1/2

The ring size may be professionally adjusted in size on request to meet your personal requirements.

Weight

9.98 grams

Date: Diamond Circa 1900 / Setting Circa 1945

SKU: C9911

Declaration

AC Silver has dated this Platinum Diamond Trilogy Ring to the 1940s.

Reference Numbers
Sellingantiques Reference
SA1237618
Dealers Internal Reference
C9911
Dealers Notes

PLEASE NOTE: AC Silver takes pride in offering only quality items for sale.

This pride in quality includes the professional, efficient and personal service extended to all AC Silver customers.

All items purchased usually dispatched within 24 hours following cleared payment.

All items are professionally and securely packaged, sent FREE of charge and are FULLY INSURED during transit.

FREE worldwide international deliveries are via FedEx International Priority Service.

AC Silver is pleased to provide a 30-day money back guarantee.

Description
A stunning, fine and impressive 4.55 carat diamond and platinum trilogy ring; part of our engagement rings collection.

This stunning, fine and impressive diamond trilogy ring has been crafted in platinum.

fig 1. An antique platinum trilogy ring set with three cushion cut diamonds and decorated with hand-engraved shoulders.
fig 1. 4.55ct Diamond and Platinum Trilogy Ring - Antique and Vintage

The vintage (circa 1945) pierced decorated setting is embellished with an antique (circa 1900) 2.11ct Old European cut diamond, four-claw set in subtle relief to the centre, flanked with a 1.23ct and 1.21ct Old European cut diamond.

fig 2. An antique platinum trilogy ring set with three cushion cut diamonds and decorated with hand-engraved shoulders.
fig 2. 4.55ct Diamond and Platinum Trilogy Ring - Antique and Vintage

The tapering ring shoulders and sides of the setting are embellished with finely engraved details in the Art Deco manner, integrating with the main setting and continuing seamlessly with the ring shank.

fig 3. An antique platinum trilogy ring set with three cushion cut diamonds and decorated with hand-engraved shoulders.
fig 3. 4.55ct Diamond and Platinum Trilogy Ring - Antique and Vintage

This stunning diamond engagement ring is hallmarked to the interior with the platinum mark (95% PLAT) and has been independently tested using state of the art technology (Niton XL2 Analyzer) and verified as platinum.

fig 4. An antique platinum trilogy ring set with three cushion cut diamonds and decorated with hand-engraved shoulders.
fig 4. 4.55ct Diamond and Platinum Trilogy Ring - Antique and Vintage

This platinum three stone ring is supplied with three IDGL diamond grading certificates.

Featuring three stunning diamonds with an impressive combined weight of 4.

“
5 carats, the trilogy design beautifully symbolises a couple's past, present, and future together, making it one of the most meaningful ring styles.
AC Silver

This remarkable ring is an outstanding choice for engagements, landmark anniversaries, vow renewals, or milestone celebrations, combining breath-taking brilliance with enduring symbolism.

fig 5. An antique platinum trilogy ring set with three cushion cut diamonds and decorated with hand-engraved shoulders.
fig 5. 4.55ct Diamond and Platinum Trilogy Ring - Antique and Vintage

Images do not always reflect the true colour and brilliance of gemstones and diamonds. The video however provides a truer representation of the actual colour and showcases each stone in this platinum three stone diamond ring.

fig 6. An antique platinum trilogy ring set with three cushion cut diamonds and decorated with hand-engraved shoulders.
fig 6. 4.55ct Diamond and Platinum Trilogy Ring - Antique and Vintage

Condition

This impressive trilogy dress ring is exceptional quality, set with three stunning diamonds displaying a fine white colour, brilliance and presence.

The ring is an exceptional gauge of platinum and is in exceptional condition, with a very clear hallmark to the interior of the shank.

fig 7. An antique platinum trilogy ring set with three cushion cut diamonds and decorated with hand-engraved shoulders.
fig 7. 4.55ct Diamond and Platinum Trilogy Ring - Antique and Vintage

The decoration to one side of the gallery setting has minor wear, indicating the ring has been sat against another; this does not detract from the aesthetically pleasing appearance of piece.

Reflections in photographs may detract from the true representation of this stunning 4.5 carat diamond trilogy ring in platinum.

fig 8. An antique platinum trilogy ring set with three cushion cut diamonds and decorated with hand-engraved shoulders.
fig 8. 4.55ct Diamond and Platinum Trilogy Ring - Antique and Vintage

Diamond Quality

Feature Diamond One

Colour K

Clarity VS2

Cut Old European

Content 2.11 carats

Dimensions 7.91mm (length) x 7.89mm (width) x 5.52mm (depth)

Feature Diamond Two

Colour I

Clarity VS2

Cut Old European

fig 9. An antique platinum trilogy ring set with three cushion cut diamonds and decorated with hand-engraved shoulders.
fig 9. 4.55ct Diamond and Platinum Trilogy Ring - Antique and Vintage

Content 1.23 carats

Dimensions 6.12mm (length) x 6.09mm (width) x 4.13mm (depth)

Feature Diamond Three

Colour I

Clarity SI1

Cut Old European

Content 1.21 carats

Dimensions 6.11mm (length) x 6.08mm (width) x 4.13mm (depth)

fig 10. An antique platinum trilogy ring set with three cushion cut diamonds and decorated with hand-engraved shoulders.
fig 10. 4.55ct Diamond and Platinum Trilogy Ring - Antique and Vintage

Total Diamond Content

4.55 carats

Number of Diamonds

3

Dimensions

Length of setting 1.88cm/0.74'

Width of setting 7.95mm/0.31'

Height of setting 8.03mm/0.32'

Ring Size

UK Size L

USA Size 5 1/2

The ring size may be professionally adjusted in size on request to meet your personal requirements.

Weight

9.98 grams

Date: Diamond Circa 1900 / Setting Circa 1945

SKU: C9911

Date of Manufacture

AC Silver has dated this Platinum Diamond Trilogy Ring to the 1940s.

Reference Numbers
Sellingantiques Ref
SA1237618
Dealers Internal Ref
C9911
AC Silver
AC Silver
Sellingantiques verified Since Apr 2009

Welcome to ac silver antique silver and antique jewellery specialists since 1977

Dealer Profile

You can view the stock and full dealer information on the AC Silver Profile Page

Trade Associations

AC Silver is a registered member of LAPADA  CINOA

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An antique platinum trilogy ring set with three cushion cut diamonds and decorated with hand-engraved shoulders.
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Film
Film of 4.55ct Diamond and Platinum Trilogy Ring - Antique and Vintage
Archive I An antique platinum trilogy ring set with three cushion cut diamonds and decorated with hand-engraved shoulders.

4.55ct Diamond and Platinum Trilogy Ring - Antique and Vintage

Film
Archive II An antique platinum trilogy ring set with three cushion cut diamonds and decorated with hand-engraved shoulders. View II
Archive III An antique platinum trilogy ring set with three cushion cut diamonds and decorated with hand-engraved shoulders. View III
Archive IV An antique platinum trilogy ring set with three cushion cut diamonds and decorated with hand-engraved shoulders. View IV
Archive V An antique platinum trilogy ring set with three cushion cut diamonds and decorated with hand-engraved shoulders. View V
Archive VI An antique platinum trilogy ring set with three cushion cut diamonds and decorated with hand-engraved shoulders. View VI
Archive VII An antique platinum trilogy ring set with three cushion cut diamonds and decorated with hand-engraved shoulders. View VII
Archive VIII An antique platinum trilogy ring set with three cushion cut diamonds and decorated with hand-engraved shoulders. View VIII
Archive IX An antique platinum trilogy ring set with three cushion cut diamonds and decorated with hand-engraved shoulders. View IX
Archive X An antique platinum trilogy ring set with three cushion cut diamonds and decorated with hand-engraved shoulders. View X
Archive XI An antique platinum trilogy ring set with three cushion cut diamonds and decorated with hand-engraved shoulders. View XI
Archive XII An antique platinum trilogy ring set with three cushion cut diamonds and decorated with hand-engraved shoulders. View XII
Archive XIII An antique platinum trilogy ring set with three cushion cut diamonds and decorated with hand-engraved shoulders. View XIII
Archive XIV An antique platinum trilogy ring set with three cushion cut diamonds and decorated with hand-engraved shoulders. View XIV
Archive XV An antique platinum trilogy ring set with three cushion cut diamonds and decorated with hand-engraved shoulders. View XV
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Telephone 0191 240 2645
Location
35B St Georges Terrace
Jesmond
Newcastle Upon Tyne
Tyne and Wear
NE2 2SU
United Kingdom
Dealer Profile Page sellingantiques.co.uk/ac
Verified Since Apr 2009
Items For Sale 415
Items Sold 110
AC Silver
AC Silver
Verified Since Apr 2009
View Dealer Info
Location: 35B St Georges Terrace, Jesmond, Newcastle Upon Tyne, Tyne and Wear, NE2 2SU, United Kingdom
Verified
Apr 2009
For Sale
415
Sold
110
An antique platinum trilogy ring set with three cushion cut diamonds and decorated with hand-engraved shoulders.
4.55ct Diamond and Platinum Trilogy Ring - Antique and Vintage
Ref: SA1237618
An antique platinum trilogy ring set with three cushion cut diamonds and decorated with hand-engraved shoulders.
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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.
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Written by Sellingantiques from the dealer’s photographs and listing
  • ObjectRings
  • Period1920 - 1940
  • StyleEdwardian
  • MaterialPlatinum, Diamond
  • ColourSilver
  • MotifsThree-stone setting, Claw set, Engraved shoulders, Hallmarked band

This Edwardian era trilogy ring is made from silver coloured platinum and set with three large diamonds. The central cushion cut diamond is four-claw set in relief and flanked by two matching cushion cut diamonds. The tapered shank and gallery feature delicate hand-engraved details in an Art Deco style, while the interior is stamped with a clear 95% platinum hallmark and minor wear is visible on one side of the pierced setting. The setting measures 1.88 cm in length. Designed as an engagement ring, it suits formal wear and special occasions as a meaningful statement piece on the hand. This antique jewellery item pairs timeless design with precious gemstones and fine metalwork. The three-stone arrangement rests securely on a band that narrows toward the back for comfortable daily wear. Independent testing verifies the platinum composition, while the included grading certificates detail the specifications of the three Old European cut stones. It functions as an heirloom accessory for formal gatherings, celebrations, and romantic milestones.

A trilogy ring, also known as a three-stone ring, traditionally symbolises the past, present, and future of a relationship, gaining widespread popularity during the Victorian and Edwardian eras.

Fine antique trilogy rings frequently pair high-purity platinum, favoured for its durability and bright white lustre, with claw-set natural diamonds.

Authentic pieces often feature period hallmarks such as 95% PLAT or PLAT, hand-engraved detailing along the band, and hand-cut stones such as cushion or old European cuts.

A platinum trilogy ring can be worn as a statement engagement ring or paired alongside plain platinum wedding bands for a balanced aesthetic.

Clean the piece gently using warm water, mild detergent, and a soft brush, and ensure claws are inspected regularly by a jeweller to maintain stone security.
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