1.77 ct Sapphire and 1.86 ct Diamond, Platinum Marquise Dress Ring - Antique Circa 1920

GBP 6,545.00

Contact Dealer To Purchase

Object Description

A stunning, fine and impressive antique 1.77 carat natural blue Basaltic sapphire and 1.86 carat diamond, platinum marquise shape ring; part of our antique jewellery collections

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

The marquise shaped mount is ornamented with three collet set oval mixed cut natural blue Basaltic sapphires displayed in a vertical formation to the centre of the design.

Sixteen mixed collet set Old European round cut and eight-cut diamonds embellish the border, with a further four collet set eight-cut diamonds completing the arrangement.

The subtly flared pierced decorated ring shoulders blend seamlessly with the plain hallmarked ring shank.

This stunning 1920’s antique diamond cluster ring is hallmarked to the interior of the shank with the marks for platinum (10% irid platinum*).

This fine dress ring is supplied with an independent diamond grading report card**.

NOTE * Any platinum alloy has to state the alloy metal first eg iridium 10% – platinum 90% in this instance.

** 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.

Sapphire Quality
Origin Basaltic
Colour Natural blue
Cut Oval mixed
Content (total) 1.77 carats

Diamond Quality
Colour (average grades) H
Clarity (average grades) SI1
Cut Old European round/eight-cut
Content (total) 1.86 carats

Length of setting 2.64cm/1.03″
Width of setting 1.37cm/0.53″
Height of setting 5.70mm/0.22″

Ring Size
UK Size P
USA Size 7 1/2
The ring size may be professionally adjusted in size on request to meet your personal requirements.

Object History

Date: Circa 1920
Origin: Australia (strong probability)

Object Literature


FREE OF CHARGE to all customers – including national and international deliveries.

Dispatch is either the same or next working day once a payment is received.


Insurance cover is provided FREE OF CHARGE for items up to the value of £30,000.

All items are fully insured and sent at the risk of AC Silver.

Complimentary insurance valuation with images and text is provided with your purchase

Object Condition

This impressive original antique cluster ring is fine quality set with natural blue sapphires and very high colour graded, old cut diamonds.

The ring is a very good gauge of platinum and is in excellent condition with a very clear hallmark to the interior.

Object Details

Dealer Opening Times

By appointment only.

Dealer Contact

+44 (0)191 240 2645
+44 (0)7836 286218

Dealer Location

35b St Georges Terrace
Tyne and Wear

Tel: +44 (0) 191 240 2645

Fax: +44 (0) 191 240 2647

VAT: GB 500 0310 42

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