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ID #SA1142585
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Art Deco 18ct Platinum Diamond Ring
Sold by Catherines Antique Jewellery Box
sold SA1142585
Sorry, but this item has been sold.
Catherines Antique Jewellery Box

Catherines Antique Jewellery Box

Sellingantiques Verified Since Nov 2024
Browse dealers 40 items
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    Antique jewellery finds of classic timeless quality and design
Id #SA1142585
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Art Deco 18ct Platinum Diamond Ring

1920 - 1940
Sold 6 June 2025 · Catherines Antique Jewellery Box
This “Art Deco 18ct Platinum Diamond Ring” found a buyer.

It was listed by Catherines Antique Jewellery Box. 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

Pretty Art Deco 18ct Platinum Diamond Ring in a square form with approx 0.55ct diamonds minimum. This superb quality ring has three very bright old cut diamond of 3.2mm x 3.3mms each 0.12ct diamond each, set into a square form. There are four further diamonds to the shoulders totally about 0.8ct. Total diamond weight is 0.55ct min and diamonds set in a very pretty and protective milligrain setting. Really pretty and classical three stone ring in a lovely setting, diamonds have a really very bright sparkle and are excellent quality. There are hallmarks for 18ct gold and platinum and the makers mark A.Bros. This ring would make a wonderful engagement ring, its absolutely beautiful and typifies the art deco look - with plenty of wow factor and a timeless feel of antique cuts. The square face measures approx 8mm x 7mm on each length. The stones are all set in a strong and protective platinum setting. The ring is in absolutely excellent condition for its age. There are no chips, nibbles or cracks to the stone. Size UK Q and U.S Size 8 the total weight is 2.9g.

Please Check Sizes And Weights As JEWELLERY IMAGES ARE ENLARGED. Dark areas are reflections on the gold.

BUY WITH CONFIDENCE: I try to accurately describe my items. I never knowingly mis-sell any item, so please read the description carefully. All items are checked by a professional Jeweller for authenticity; however no certificates are provided. If for any reason the item is found not to be genuine or as described a full refund will be given. So please buy with confidence.

Your jewellery will come in a modern gift box and not necessarily the one in the photograph.

Please also note that Antique and Vintage items will show some signs of wear commensurate with age.

Returns are accepted however buyer must pay return postage.

Declaration

Catherines Antique Jewellery Box has dated this Art Deco Diamond Ring to the 1930s.

Reference Numbers
Sellingantiques Reference
SA1142585
Dealers Internal Reference
CT609
Description
Pretty Art Deco 18ct Platinum Diamond Ring in a square form with approx 0.55ct diamonds minimum. This superb quality ring has three very bright old cut diamond of 3.2mm x 3.3mms each 0.12ct diamond each, set into a square form. There are four further diamonds to the shoulders totally about 0.8ct. Total diamond weight is 0.55ct min and diamonds set in a very pretty and protective milligrain setting.
“
Really pretty and classical three stone ring in a lovely setting, diamonds have a really very bright sparkle and are excellent quality.
Catherines Antique Jewellery Box

There are hallmarks for 18ct gold and platinum and the makers mark A.Bros. This ring would make a wonderful engagement ring, its absolutely beautiful and typifies the art deco look - with plenty of wow factor and a timeless feel of antique cuts. The square face measures approx 8mm x 7mm on each length. The stones are all set in a strong and protective platinum setting. The ring is in absolutely excellent condition for its age. There are no chips, nibbles or cracks to the stone. Size UK Q and U.S Size 8 the total weight is 2.9g.

fig 1. An Art Deco 18ct gold and platinum ring featuring a square cluster of four old-cut diamonds with millegrain detailing.
fig 1. Art Deco 18ct Platinum Diamond Ring

Please Check Sizes And Weights As JEWELLERY IMAGES ARE ENLARGED. Dark areas are reflections on the gold.

BUY WITH CONFIDENCE: I try to accurately describe my items. I never knowingly mis-sell any item, so please read the description carefully. All items are checked by a professional Jeweller for authenticity; however no certificates are provided. If for any reason the item is found not to be genuine or as described a full refund will be given. So please buy with confidence.

fig 2. An Art Deco 18ct gold and platinum ring featuring a square cluster of four old-cut diamonds with millegrain detailing.
fig 2. Art Deco 18ct Platinum Diamond Ring

Your jewellery will come in a modern gift box and not necessarily the one in the photograph.

Please also note that Antique and Vintage items will show some signs of wear commensurate with age.

Returns are accepted however buyer must pay return postage.

Date of Manufacture

Catherines Antique Jewellery Box has dated this Art Deco Diamond Ring to the 1930s.

Reference Numbers
Sellingantiques Ref
SA1142585
Dealers Internal Ref
CT609
Catherines Antique Jewellery Box
Catherines Antique Jewellery Box
Sellingantiques verified Since Nov 2024

Antique jewellery finds of classic timeless quality and design

Dealer Profile

You can view the stock and full dealer information on the Catherines Antique Jewellery Box Profile Page

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An Art Deco 18ct gold and platinum ring featuring a square cluster of four old-cut diamonds with millegrain detailing. SOLD6+ MONTHS AGO
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Archive I An Art Deco 18ct gold and platinum ring featuring a square cluster of four old-cut diamonds with millegrain detailing. SOLD6+ MONTHS AGO

Art Deco 18ct Platinum Diamond Ring

Archive II An Art Deco 18ct gold and platinum ring featuring a square cluster of four old-cut diamonds with millegrain detailing. View II
Archive III An Art Deco 18ct gold and platinum ring featuring a square cluster of four old-cut diamonds with millegrain detailing. View III
Archive IV An Art Deco 18ct gold and platinum ring featuring a square cluster of four old-cut diamonds with millegrain detailing. View IV
Archive V An Art Deco 18ct gold and platinum ring featuring a square cluster of four old-cut diamonds with millegrain detailing. View V
Archive VI An Art Deco 18ct gold and platinum ring featuring a square cluster of four old-cut diamonds with millegrain detailing. View VI
Archive VII An Art Deco 18ct gold and platinum ring featuring a square cluster of four old-cut diamonds with millegrain detailing. View VII
Archive VIII An Art Deco 18ct gold and platinum ring featuring a square cluster of four old-cut diamonds with millegrain detailing. View VIII
Archive IX An Art Deco 18ct gold and platinum ring featuring a square cluster of four old-cut diamonds with millegrain detailing. View IX
Archive X An Art Deco 18ct gold and platinum ring featuring a square cluster of four old-cut diamonds with millegrain detailing. View X
Archive XI An Art Deco 18ct gold and platinum ring featuring a square cluster of four old-cut diamonds with millegrain detailing. View XI
Archive XII An Art Deco 18ct gold and platinum ring featuring a square cluster of four old-cut diamonds with millegrain detailing. View XII
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Catherines Antique Jewellery Box

Catherines Antique Jewellery Box
Telephone 07908 074712
Location
Somerset
United Kingdom
Dealer Profile Page sellingantiques.co.uk/sgolda
Verified Since Nov 2024
Items For Sale 40
Items Sold 262
Catherines Antique Jewellery Box
Catherines Antique Jewellery Box
Verified Since Nov 2024
View Dealer Info
Location: Somerset, United Kingdom
Profile: sellingantiques.co.uk/sgolda
Verified
Nov 2024
For Sale
40
Sold
262
An Art Deco 18ct gold and platinum ring featuring a square cluster of four old-cut diamonds with millegrain detailing.
Art Deco 18ct Platinum Diamond Ring
Ref: SA1142585
An Art Deco 18ct gold and platinum ring featuring a square cluster of four old-cut diamonds with millegrain detailing.
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Cataloguer’s note

Written by Sellingantiques from the dealer’s photographs and listing
  • ObjectRings
  • Period1920 - 1940
  • StyleArt Deco
  • MaterialPlatinum, 18ct Gold, Diamond
  • ColourSilver and Gold
  • MotifsSquare cluster setting, Millegrain edges, Old-cut diamonds, Graduated shoulders

FAQs

Art Deco jewellery, prominent from the 1920s to the 1930s, is characterised by geometric symmetry, clean lines, precision, and the frequent pairing of diamonds with platinum or white gold.

Authentic pieces frequently utilise platinum for its strength and ability to hold delicate millegrain detailing, often combined with yellow gold shanks and old-mine or old-European cut diamonds.

Authentic pieces typically feature hand-cut diamonds such as old European or single cuts, hand-applied millegrain edges, open-work gallery construction, and period hallmarks.

An antique ring can be styled as a distinctive standalone engagement piece or paired with minimalist contemporary wedding bands to highlight its historical geometry.

Preserve the piece by storing it in a fabric-lined box, avoiding harsh chemical cleaners, and having the setting and millegrain inspected periodically by a professional jeweller.
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