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French platinum sapphire and diamond ring outside
Basaltic sapphire and diamond ring
wearing French platinum sapphire and diamond ring
Basaltic sapphire and diamond ring
platinum Basaltic sapphire and diamond ring
side view Art Deco sapphire and diamond cocktail ring
French platinum sapphire and diamond ring on hand
French platinum sapphire and diamond ring on finger
French platinum sapphire and diamond ring on hand
sapphire and diamond ring grading card
French platinum sapphire and diamond ring greading certificate
sapphire and diamond ring grading certificate

Art Deco 1.10ct Sapphire and 2.45ct Diamond Dress Ring in Platinum

A stunning, fine and impressive antique French 1.10 carat Basaltic sapphire and 2.45 carat diamond, platinum Art Deco cocktail ring; part of our diverse collection of antique rings

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

The pierced decorated, Art Deco style navette design is ornamented with an impressive feature baguette cut Basaltic sapphire, collet set in subtle relief to the centre of the design.

The feature sapphire is flanked on either side with two substantial pavé set Old European round cut diamonds, totalling 0.99 carats, accented with two smaller eight-cut diamonds to the outer point of the design.

Twenty impressive channel set French cut blue sapphires surround the central arrangement.

The bordering sapphires are encompassed with fourteen fine and impressive Old European cut diamonds, each individually set within the fenestrated, pierced decorated rim.

The elevated, tapering ring shoulders are ornamented with a further four diamonds and integrate with the fenestrated design, blending seamlessly with the engraved ring shank.

The ring is hallmarked to the outer surface of the shank with the French import mark for platinum (masked man).

This Art Deco sapphire ring is supplied with two independant diamond grading certificates for the feature diamonds, in addition to an IDGL diamond grading report card for the sapphires and supporting diamonds*.

A 1930s ring of this calibre is an exceptional choice for a statement piece or a unique engagement ring for someone who appreciates bold antique design. Its elongated navette shape flatters the finger, while the combination of sapphires and diamonds creates striking contrast and depth. Ideal for formal occasions or special celebrations, this ring offers both remarkable craftsmanship and timeless Art Deco elegance.

NOTE: * The Gemmological Certification Services (GCS) lab has verbally accredited the sapphire originating in Basaltic deposits and verifies that the gemstone shows no indications of heating; non-heated sapphires are a scarcity.

 

This platinum sapphire and diamond ring is set with a impressive blue sapphires and very high colour graded Old European cut diamonds, displaying a fine white colour, brilliance and presence.

The feature sapphire and supporting stones display a fine colour, brilliance and presence.

This gemstone ring is an exceptional gauge of platinum and is in excellent condition, the hallmark to the outer surface of the shank is very clear.

Additional information

Sapphire Quality

Colour Blue
Origin Basaltic
Cut Baguette / French
Content 1.10 carats

Diamond Quality

Feature Diamond One
Colour H
Clarity VS1
Cut Old European
Content 0.50 carats
Dimensions 4.50mm x 4.48mm x 3.27mm

Feature Diamond Two
Colour H
Clarity VS2
Cut Old European
Content 0.49 carats
Dimensions 4.78mm x 4.73mm x 3.07mm

Supporting Diamonds
Colour (average grades) H
Clarity (average grades) VS2
Cut Old European round / Eight-cut
Content (total) 1.46 carats

Total Diamond Content
2.45 carats

Dimensions

Length of Setting 1.38cm/0.54"
Width of Setting 2.05cm/0.81"
Height of Setting 4.3mm/0.17"

Weight

6.75 grams

Date

Circa 1930

Metal

Platinum

Ring Size

UK Size L 1/2 – USA Size 5 1/2

Gemstone

,

Origin

France

Diamond Clarity:

VS1

Diamond Colour:

H

Can be Resized:

yes

FREE INTERNATIONAL SHIPPING
Dispatched via DHL (or equivalent) on the next working day.

Estimated Delivery:

  • UK: 2–3 working days
  • Worldwide: 5–7 working days

Fully Insured in Transit
Free insurance up to £30,000. AC Silver remains responsible until delivery is confirmed.

Returns & Cancellations
You have 14 days to cancel your order.

Returns must be sent to our UK address within 14 days of cancellation.

Customers are responsible for return postage. A refund will be processed after inspection of the returned item.

Altered or Personalised Items

  • Items resized or altered before dispatch: exchange or credit note only
  • Engraved silver: non-refundable

Full returns & cancellation policy

What our customers say

5.0 ★★★★★ ★★★★★ based on 201 reviews
★★★★★ ★★★★★

Lovely selection & excellent service

AC Silver has a stunning selection of antique and vintage items. Both of my brooches arrived right on time as indicated by the tracking. They are even lovelier in person and I look forward to wearing them for decades to come. Andrew and Gemma provided excellent communication and prompt dispatch. I would absolutely recommend working through them.
Christina 15 Jul 2026
★★★★★ ★★★★★

Fabulous service, beautiful product.

Fabulous service, beautiful product.
Imogen 24 Jun 2026
★★★★★ ★★★★★

Beautiful collection and outstanding service

Beautiful collection and outstanding service. I already bought two extraordinary pieces and can only highly recommend.
Christine 23 Jun 2026
★★★★★ ★★★★★

Excellent customer care.

I had to place the order over the phone as my internet was misbehaving. The lady who I spoke to could not have been more helpful and was particularly careful to get all the details correct. I was then informed about the collection and dispatch of the item purchased, by email. The item arrived as expected and it had been most well packed so that no harm could come to it. It was a delight to purchase this item from C6323, AC Silver, and I could not fault any aspect of their customer care. I was highly delighted with my silver mustard pot and it was much better than the pictures on the web site.
Hilary 20 May 2026
★★★★★ ★★★★★

Exceptional personal service

First class personal service and attention to detail along with an exceptional quality of items offered for sale. A very smooth purchasing experience with swift and safe despatch of high value objects via courier. Highly recommended.
Colin 28 Apr 2026
★★★★★ ★★★★★

A lovely experience

AC Silver's website is very detailed and informative - allows customers to make well good comparisons and subsequent choices. The owner and his staff are very helpful and friendly - dealing with them is a pleasure. They go the extra mile to make sure that customers are totally satisfied with their purchases. Would highly recommend this store.
Wendy 27 Feb 2026
★★★★★ ★★★★★

Excellent experience

Excellent experience buying a beautiful item from AC Silver. Enquiries were dealt with quickly and courteously, I felt very confident buying an expensive item online. It arrived quickly and safely, beautifully packaged. I am delighted with it and wouldn't hesitate to recommend AC Silver.
Susan 24 Jan 2026
★★★★★ ★★★★★

This was an all-around great experience. The pre-sale communication was excellent and informative. The team was extremely responsive. When the item arrived, it was exactly as described.

This was an all-around great experience. The pre-sale communication was excellent and informative. The team was extremely responsive. When the item arrived, it was exactly as described. I would recommend these guys to anyone.
26 Dec 2025

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