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ID #SA1238931
FOR SALE
£7,950
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Antique 1.64ct Diamond and Platinum Three Stone Ring Circa 1925
For sale by AC Silver
for sale €9,302     $10,097
£7,950
AC Silver

AC Silver

Sellingantiques Verified Since Apr 2009
Browse dealers 448 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 #SA1238931
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Antique 1.64ct Diamond and Platinum Three Stone Ring Circa 1925

1900 - 1920
For Sale by AC Silver
Description

A stunning, fine and impressive antique 1920s 1.64 carat diamond and platinum three stone ring; part of our collection of diamond engagement rings.

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

The pierced decorated antique ring setting is embellished with a claw set 0.97ct Old European round cut diamond.

The central stone is flanked with a 0.37ct and 0.30 Old European round cut diamond, claw set in a vertical trilogy arrangement; each stone is held in multi-claw crown setting, allowing light to flood through the profile and highlight the brilliance of the antique facets.

The elevated ring shoulders integrate with the claw setting and blend seamlessly with the plain platinum ring shank.

This antique trilogy ring is hallmarked to the interior of the shank with the maker's mark (CG&S) and platinum mark (PLATINUM) and has been independently tested using state of the art technology (Niton XL2 Analyzer) and verified as platinum.

This impressive antique engagement ring is supplied with three IDGL diamond grading report certificates.

This classic trilogy ring in platinum is traditionally associated with a couple's past, present and future, making it particularly fitting for an engagement while also offering beautiful significance for an anniversary or vow renewal. Platinum provides a refined, naturally white setting that complements the brilliance of the gemstones while offering the durability expected from a piece intended to be worn and treasured for a lifetime. Elegant yet enduring in style, a trilogy engagement ring carries a story beyond its beauty, creating a sentimental future heirloom that can celebrate one relationship for generations.

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.

Condition

This 1920s engagement ring is excellent quality, set with impressive high clarity graded diamonds displaying a fine white colour, brilliance and presence.

The diamond ring is an excellent gauge of platinum and is in excellent condition, with clear hallmarks to the interior of the shank.

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

Diamond Quality

Feature Diamond One

Colour K

Clarity VS1

Cut Old European

Content 0.97 carat

Dimensions 6.37mm (length) x 6.35mm (width) x 3.82mm (depth)

Feature Diamond Two

Colour I

Clarity VS2

Cut Old European

Content 0.37 carat

Dimensions 4.63mm (length) x 4.61mm (width) x 2.78mm (depth)

Feature Diamond Three

Colour H

Clarity VS2

Cut Old European

Content 0.30 carat

Dimensions 4.29mm (average diameter) x 4.28mm (depth)

Total Diamond Content

1.64 carats

Number of Diamonds

3

Dimensions

Length of setting 1.56cm/0.61'

Width of setting 6.67mm/0.26'

Height of setting 5.57mm/0.22'

Ring Size

UK Size M 1/2

USA Size 6 1/4

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

Weight

4.18 grams

Date: Circa 1925

SKU: C9957

Declaration

AC Silver has dated this Platinum Diamond Trilogy Ring to the 1920s.

Reference Numbers
Sellingantiques Reference
SA1238931
Dealers Internal Reference
C9957
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 antique 1920s 1.64 carat diamond and platinum three stone ring; part of our collection of diamond engagement rings.

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

fig 1. An Art Deco platinum ring set with three claw-set round diamonds positioned horizontally along the band.
fig 1. Antique 1.64ct Diamond and Platinum Three Stone Ring Circa 1925

The pierced decorated antique ring setting is embellished with a claw set 0.97ct Old European round cut diamond.

The central stone is flanked with a 0.37ct and 0.30 Old European round cut diamond, claw set in a vertical trilogy arrangement; each stone is held in multi-claw crown setting, allowing light to flood through the profile and highlight the brilliance of the antique facets.

“
The elevated ring shoulders integrate with the claw setting and blend seamlessly with the plain platinum ring shank.
AC Silver
fig 2. An Art Deco platinum ring set with three claw-set round diamonds positioned horizontally along the band.
fig 2. Antique 1.64ct Diamond and Platinum Three Stone Ring Circa 1925

This antique trilogy ring is hallmarked to the interior of the shank with the maker's mark (CG&S) and platinum mark (PLATINUM) and has been independently tested using state of the art technology (Niton XL2 Analyzer) and verified as platinum.

fig 3. An Art Deco platinum ring set with three claw-set round diamonds positioned horizontally along the band.
fig 3. Antique 1.64ct Diamond and Platinum Three Stone Ring Circa 1925

This impressive antique engagement ring is supplied with three IDGL diamond grading report certificates.

This classic trilogy ring in platinum is traditionally associated with a couple's past, present and future, making it particularly fitting for an engagement while also offering beautiful significance for an anniversary or vow renewal. Platinum provides a refined, naturally white setting that complements the brilliance of the gemstones while offering the durability expected from a piece intended to be worn and treasured for a lifetime. Elegant yet enduring in style, a trilogy engagement ring carries a story beyond its beauty, creating a sentimental future heirloom that can celebrate one relationship for generations.

fig 4. An Art Deco platinum ring set with three claw-set round diamonds positioned horizontally along the band.
fig 4. Antique 1.64ct Diamond and Platinum Three Stone Ring Circa 1925

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.

Condition

This 1920s engagement ring is excellent quality, set with impressive high clarity graded diamonds displaying a fine white colour, brilliance and presence.

fig 5. An Art Deco platinum ring set with three claw-set round diamonds positioned horizontally along the band.
fig 5. Antique 1.64ct Diamond and Platinum Three Stone Ring Circa 1925

The diamond ring is an excellent gauge of platinum and is in excellent condition, with clear hallmarks to the interior of the shank.

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

fig 6. An Art Deco platinum ring set with three claw-set round diamonds positioned horizontally along the band.
fig 6. Antique 1.64ct Diamond and Platinum Three Stone Ring Circa 1925

Diamond Quality

Feature Diamond One

Colour K

Clarity VS1

Cut Old European

Content 0.97 carat

Dimensions 6.37mm (length) x 6.35mm (width) x 3.82mm (depth)

Feature Diamond Two

Colour I

Clarity VS2

Cut Old European

fig 7. An Art Deco platinum ring set with three claw-set round diamonds positioned horizontally along the band.
fig 7. Antique 1.64ct Diamond and Platinum Three Stone Ring Circa 1925

Content 0.37 carat

Dimensions 4.63mm (length) x 4.61mm (width) x 2.78mm (depth)

Feature Diamond Three

Colour H

Clarity VS2

Cut Old European

Content 0.30 carat

Dimensions 4.29mm (average diameter) x 4.28mm (depth)

fig 8. An Art Deco platinum ring set with three claw-set round diamonds positioned horizontally along the band.
fig 8. Antique 1.64ct Diamond and Platinum Three Stone Ring Circa 1925

Total Diamond Content

1.64 carats

Number of Diamonds

3

Dimensions

Length of setting 1.56cm/0.61'

Width of setting 6.67mm/0.26'

Height of setting 5.57mm/0.22'

Ring Size

UK Size M 1/2

USA Size 6 1/4

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

Weight

4.18 grams

Date: Circa 1925

SKU: C9957

Date of Manufacture

AC Silver has dated this Platinum Diamond Trilogy Ring to the 1920s.

Reference Numbers
Sellingantiques Ref
SA1238931
Dealers Internal Ref
C9957
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 Art Deco platinum ring set with three claw-set round diamonds positioned horizontally along the band.
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Film
Film of Antique 1.64ct Diamond and Platinum Three Stone Ring Circa 1925
Archive I An Art Deco platinum ring set with three claw-set round diamonds positioned horizontally along the band.

Antique 1.64ct Diamond and Platinum Three Stone Ring Circa 1925

Film
Archive II An Art Deco platinum ring set with three claw-set round diamonds positioned horizontally along the band. View II
Archive III An Art Deco platinum ring set with three claw-set round diamonds positioned horizontally along the band. View III
Archive IV An Art Deco platinum ring set with three claw-set round diamonds positioned horizontally along the band. View IV
Archive V An Art Deco platinum ring set with three claw-set round diamonds positioned horizontally along the band. View V
Archive VI An Art Deco platinum ring set with three claw-set round diamonds positioned horizontally along the band. View VI
Archive VII An Art Deco platinum ring set with three claw-set round diamonds positioned horizontally along the band. View VII
Archive VIII An Art Deco platinum ring set with three claw-set round diamonds positioned horizontally along the band. View VIII
Archive IX An Art Deco platinum ring set with three claw-set round diamonds positioned horizontally along the band. View IX
Archive X An Art Deco platinum ring set with three claw-set round diamonds positioned horizontally along the band. View X
Archive XI An Art Deco platinum ring set with three claw-set round diamonds positioned horizontally along the band. View XI
Archive XII An Art Deco platinum ring set with three claw-set round diamonds positioned horizontally along the band. View XII
Archive XIII An Art Deco platinum ring set with three claw-set round diamonds positioned horizontally along the band. View XIII
Archive XIV An Art Deco platinum ring set with three claw-set round diamonds positioned horizontally along the band. View XIV
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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 448
Items Sold 112
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
448
Sold
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An Art Deco platinum ring set with three claw-set round diamonds positioned horizontally along the band.
Antique 1.64ct Diamond and Platinum Three Stone Ring Circa 1925
Ref: SA1238931
An Art Deco platinum ring set with three claw-set round diamonds positioned horizontally along the band.
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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.
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Written by Sellingantiques from the dealer’s photographs and listing
  • ObjectRings
  • Period1900 - 1920
  • StyleArt Deco
  • MaterialPlatinum, Diamond
  • ColourSilver
  • MotifsTrilogy design, claw settings, stamped platinum shank

This 1920s Art Deco trilogy ring is formed from platinum and set with three round old European cut diamonds horizontally aligned across the band. The central diamond is flanked by two smaller stones, each held within a multi-claw crown setting on elevated shoulders that blend into a plain shank. The interior carries stamped hallmarks displaying the maker mark CG&S alongside the word PLATINUM. The photograph shows a silver-coloured metal finish, multiple claw prongs securing each gemstone, and interior shank stamps. This ring measures UK size M 1/2 or USA size 6 1/4, with a total diamond content of 1.64 carats. It is worn on the hand as an engagement, anniversary, or dress ring.

Three-stone rings, also known as trilogy rings, gained widespread popularity during the late 19th and early 20th centuries. Symbolically representing the past, present, and future, the style became a standard design for engagement and milestone anniversary pieces during the Art Deco era.

During the 1920s, platinum became the premier choice of metal due to its durability and natural white lustre, which enhanced the brilliance of diamonds. Diamonds from this era were frequently hand-cut into Old European or transitional cuts and set in multi-claw mountings.

Authentic pieces from this period typically display hand-cut diamond proportions, such as smaller table facets and open culets, alongside maker marks or metal purity stamps inside the shank, such as PLATINUM or PLAT. The structural construction often features hand-finished claw mountings.

An antique trilogy ring can serve as a standalone statement ring or as a vintage engagement ring. Its classic white-metal profile allows it to pair with either complementary platinum bands or contrasting gold bands for a mixed-metal aesthetic.

Clean the ring using warm water, mild liquid soap, and a soft-bristled brush to remove dust from under the settings. Periodic professional checks are recommended to ensure the individual claws remain secure around the diamonds.
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