5.94ct Opal and 6.55ct Diamond, 18ct Yellow Gold Dress Ring by Grima - Vintage Circa 1975

GBP 13,950.00

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Object Description

A stunning, fine and impressive vintage 5.94 carat opal and 6.55 carat diamond, 18 carat yellow gold and 18 carat white gold set cocktail ring by Grima; part of our diverse vintage jewellery and estate jewelry collections.

This stunning, fine and impressive vintage opal ring has been crafted in 18 ct yellow gold with an 18 ct white gold setting.

This vintage Grima ring with opal and diamonds is called the ‘swimming pool’ ring, due to its lowered blue opal design.

The pierced decorated, oval setting is ornamented with a feature 5.94 ct oval cabochon cut opal, 18 ct white gold collet set in subtle relief to the centre of the design.

The opal is framed by a total of fifty-two individually 18 ct white gold collet set, square / emerald cut diamonds, totalling 6.55 carats.

The pierced decorated ring shoulders integrate with the main setting and join the shank at a subtle cuff design.

The cast gold shank has a naturalistic bark effect.

The ring is hallmarked to the interior of the shank with the maker’s mark ‘GRIMA’, and the 18 ct gold fineness mark (750).

This impressive vintage opal ring is supplied with an independent diamond grading report card.


The brand ‘Grima’, created by Andrew Grima revolutionised jewellery in the early 1960’s. By the mid 1960’s he was the Royal and society jeweller of the day.

Grima is recognised as one of the great jewellery designers of the 20th Century. His work can be viewed in the collections of Worshipful Company of Goldsmiths, and at the Victoria & Albert Museum.

Today, a limited collection of twenty to thirty pieces is crafted each year, due to the unique skill required to make these pieces.

This stunning, fine and impressive Grima opal and diamond cocktail ring is therefore a highly collectable and extremely rare item of jewellery.

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.

Opal Quality
Cut Oval Cabochon
Content 5.94 carats
Dimensions 14.08mm x 10.91mm x 7.78mm

Diamond Quality
Colour (average grades) E
Clarity (average grades) VS2
Cut Square/Emerald
Content (total) 6.55 carats

Length of Setting 2.25cm/0.89″
Width of Setting 1.83cm/0.72″
Height of Setting 1.07cm/0.42″

Ring Size
UK Size O 1/2
USA Size 7 1/4

The ring size may be professionally adjusted in size on request to meet your personal requirements.

20.15 grams

Object History

Maker: Grima
Date: Circa 1975

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 stunning vintage Grima ring with opal and diamonds is exceptional quality set with a opal, displaying a scintillating play of colour and very well colour matched, very high colour graded diamonds, displaying a fine white colour and brilliance

The ring is an exceptional gauge of gold and is in exceptional condition with clear hallmarks to the interior of the shank.

Reflections in photographs may detract from the true representation of this fine example of opal jewellery/estate jewelry.

Object Details

Dealer Opening Times

We are open weekly as follows:

10 - 5
10 - 5
10 - 5
10 - 5
10 - 5
10 - 5

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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