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ID #SA1065455
FOR SALE
£3,950
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Early 20th Century Natural Certified Unheated Sapphire and Diamond Ring
Mitaine
for sale €4,622     $5,017
£3,950
Mitaine

Mitaine

Sellingantiques Verified Since Nov 2018
View Dealers Stock Page
  • About Us
    Specialises in antique fine jewellery
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Id #SA1065455
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Early 20th Century Natural Certified Unheated Sapphire and Diamond Ring

1900 - 1920
For Sale by Mitaine
Description

Fabulous deep blue sapphire and old cut diamond ring, set in platinum and with six old cut diamonds and a vertical row of three natural sapphires which are unheated.  The ring is a beautifully set and slightly curves to slip onto the finger. It is dates from late 1910s - 1920s. Size L 1/2 or 6.5 US. It can be sized to fit.

SHIPPING

All orders will be posted with a full tracking and signed for service.

FREE DELIVERY on all orders worldwide.

Express Delivery is FREE on all orders over £500 GBP.

Orders placed by 12pm GMT will be dispatched within 25 hours.

If your order is under £500 but you require express shipping please let us know and we will add this to the order.

REFUNDS

Please contact us within 14 days of receipt of the item and a full refund will be given on its return.

Declaration

Mitaine has dated this Sapphire and Diamond Ring to the 1920s.

Reference Numbers
Sellingantiques Reference
SA1065455
Dealers Internal Reference
9927
Description
Fabulous deep blue sapphire and old cut diamond ring, set in platinum and with six old cut diamonds and a vertical row of three natural sapphires which are unheated.  The ring is a beautifully set and slightly curves to slip onto the finger. It is dates from late 1910s - 1920s. Size L 1/2 or 6.5 US. It can be sized to fit.
fig 1. An Art Deco platinum ring set with three vertical oval blue sapphires bordered by brilliant-cut diamonds in a geometric setting.
fig 1. Early 20th Century Natural Certified Unheated Sapphire and Diamond Ring

SHIPPING

All orders will be posted with a full tracking and signed for service.

FREE DELIVERY on all orders worldwide.

Express Delivery is FREE on all orders over £500 GBP.

Orders placed by 12pm GMT will be dispatched within 25 hours.

“
If your order is under £500 but you require express shipping please let us know and we will add this to the order.
Mitaine

REFUNDS

Please contact us within 14 days of receipt of the item and a full refund will be given on its return.

Date of Manufacture

Mitaine has dated this Sapphire and Diamond Ring to the 1920s.

Reference Numbers
Sellingantiques Ref
SA1065455
Dealers Internal Ref
9927
Mitaine
Mitaine
Sellingantiques verified Since Nov 2018

Specialises in antique fine jewellery

Dealer Profile

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

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An Art Deco platinum ring set with three vertical oval blue sapphires bordered by brilliant-cut diamonds in a geometric setting.
1 / 5
Archive I An Art Deco platinum ring set with three vertical oval blue sapphires bordered by brilliant-cut diamonds in a geometric setting.

Early 20th Century Natural Certified Unheated Sapphire and Diamond Ring

Archive II An Art Deco platinum ring set with three vertical oval blue sapphires bordered by brilliant-cut diamonds in a geometric setting. View II
Archive III An Art Deco platinum ring set with three vertical oval blue sapphires bordered by brilliant-cut diamonds in a geometric setting. View III
Archive IV An Art Deco platinum ring set with three vertical oval blue sapphires bordered by brilliant-cut diamonds in a geometric setting. View IV
Archive V An Art Deco platinum ring set with three vertical oval blue sapphires bordered by brilliant-cut diamonds in a geometric setting. View V
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Enlarged Archival View
Mitaine

Mitaine
Telephone 07940 113 228
Location
Gloucestershire
United Kingdom
Dealer Profile Page sellingantiques.co.uk/mitaineshop
Verified Since Nov 2018
Items For Sale 133
Items Sold 551
Mitaine
Mitaine
Verified Since Nov 2018
View Dealer Info
Location: Gloucestershire, United Kingdom
Profile: sellingantiques.co.uk/mitaineshop
Verified
Nov 2018
For Sale
133
Sold
551
An Art Deco platinum ring set with three vertical oval blue sapphires bordered by brilliant-cut diamonds in a geometric setting.
Early 20th Century Natural Certified Unheated Sapphire and Diamond Ring
Ref: SA1065455
An Art Deco platinum ring set with three vertical oval blue sapphires bordered by brilliant-cut diamonds in a geometric setting.
Detail View 1
Detail View 2
Detail View 3
Detail View 4
Archival Detail

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FAQs

Art Deco jewellery from the 1920s and 1930s is defined by geometric symmetry, clean linear forms, and bold gemstone contrasts. Rings from this period frequently feature natural blue sapphires paired with diamonds in platinum or white gold mounts decorated with fine millgrain texturing.

Jewellers of this era predominantly used platinum and white gold due to their strength and neutral colour, which complemented white diamonds. Central gemstones, such as natural unheated sapphires, were often secured in bezel or claw settings with hand-cut diamond accents.

Authentic period rings often feature hand-engraved millgrain borders, platinum period hallmarks, and hand-cut diamonds such as old European or single cuts. Laboratory certification verifying that the sapphires are natural and free from thermal treatment also provides verification of origin and era.

A geometric sapphire dress ring serves as a focal piece alongside contemporary minimalist jewellery. The deep blue hue pairs well with neutral tailorings, formal eveningwear, or layered with subtle modern platinum bands.

Clean the setting using warm water, mild soap, and a soft-bristled brush to remove dust behind the stone mountings. Store the ring in a dedicated fabric-lined box away from other hard gemstones to prevent scratching the metalwork.
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