1.03ct Thai Ruby and 0.28ct Diamond, 18ct Yellow Gold Cluster Ring - Antique Circa 1930

GBP 4,950.00

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Object Description

A stunning, fine and impressive antique 1.03ct Thai ruby and 0.28 carat diamond, 18 carat yellow gold and platinum set dress ring; part of our diverse antique jewellery and estate jewelry collections

This stunning antique ruby ring has been crafted in 18ct yellow gold with a platinum setting.

The pierced decorated setting is ornamented with a stunning feature claw set cushion cut Thai ruby to the centre of the cluster design.

The ruby is encircled by twelve impressive eight cut diamonds, each collet set within the platinum millegrain decorated frame.

The elevated and tapering yellow gold ring shoulders integrate with the main setting and blend seamlessly with the plain, hallmarked ring shank.

The interior of the shank is hallmarked with the fineness marks for 18ct gold and platinum (18 & PT).

This non heat treated ruby ring has been independently tested using state of the art technology (Niton XL2 Analyzer) and verified as 18ct gold and platinum.

The Thai ruby ring is supplied with an independent diamond grading report card for the diamonds, in addition to a ruby report card and certificate supplied by the Gemmological Certification Services, London*.

NOTE: * This documentation accredits the ruby originating in Thailand (Siam) and certifies that the gemstone shows no indications of heating; non-heated rubies are a scarcity.

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.

Ruby Quality
Origin Thailand (Siam)
Cut Cushion
Content 1.03 carats
Dimensions 6.70mm x 5.00mm x 3.20mm

Diamond Quality
Colour (average grades) H
Clarity (average grades) SI2
Cut Eight
Content 0.28 carat

Length of setting 1.14cm/0.45″
Width of setting 9.75mm/0.38″
Height of setting 4.25mm/0.17″

Ring Size
UK Size K 1/2
USA Size 5 3/8
The ring size may be professionally adjusted in size on request to meet your personal requirements.

2.74 grams

Object History

Date: Circa 1930

Object Literature


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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 dress ring is excellent quality set with a stunning natural Thai ruby displaying fine colour, brilliance and presence. The supporting diamonds are very well colour matched and display a fine white colour and brilliance. The ring is an excellent gauge of gold and platinum. The platinum millegrain decoration shows a minor loss to the upper edge, in keeping with the age of the piece. The non heat treated ruby ring is in excellent condition, with very clear hallmarks to the interior of the shank.

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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