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1.35 ct Ruby and 0.97 ct Diamond, 18 ct White Gold Twist Ring - French Antique Circa 1920

An impressive antique French 1.35 carat Thai ruby and 0.97 carat diamond, 18 carat white gold and platinum set twist ring; part of our diverse antique jewellery collections

SKU: C4345

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1.35 ct Ruby and 0.97 ct Diamond, 18 ct White Gold Twist Ring - French Antique Circa 1920 Video
Platinum Ruby and Diamond Ring
1.35 ct Ruby and 0.97 ct Diamond, 18 ct White Gold Twist Ring - French Antique Circa 1920


This stunning, fine and impressive antique ruby and diamond ring has been crafted in 18ct white gold with a platinum setting.

The ring displays a feature 0.97 ct Old European round cut diamond and a 1.35 ct cushion cut Thai ruby six-claw set diagonally on a twist within a pierced decorated platinum setting.

The offset ring shoulders integrate into the twist design and blend seamlessly with the plain ring shank.

The exterior of the ring shank is hallmarked with the French 18ct gold guarantee mark (eagle's head) and the interior bears the maker's mark (NUPTIA).

This antique twist ring has been independently tested using state of the art technology (Niton XL2 Analyzer) and verified as 18 carat gold and platinum.

The antique ring is supplied with an independent diamond grading certificate for the feature diamond, in addition to an independent gemstone grading report card for the ruby*.

NOTE: * The Gemmological Certification Services (GCS) lab has verbally accredited the ruby originating in Thailand and verifies that the gemstone shows indications of moderate heating.

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.

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AC Silver


This antique gemstone twist ring is fine quality, set with high colour graded diamond displaying a fine white colour, brilliance and presence.

The impressive ruby displays a fine colour, brilliance and presence.

The ring is a very good gauge of gold and is in excellent condition, with a very clear maker's mark to the interior of the shank.

The French hallmarks to the outer surface of the shank have wear in keeping with age and location.

Reflections in photographs may detract from the true representation of this white gold and platinum ruby and diamond ring.

Ruby Quality

Origin Thailand

Colour Red

Cut Cushion

Content 1.35 carats

Dimensions 6.32mm x 6.22mm x 3.96mm

Diamond Quality

Colour I

Clarity SI1

Cut Old European

Content 0.97 carat


Length of setting 1.22cm/0.48"

Width of setting 1.02cm/0.4"

Height of setting 5.9mm/0.23"

Ring Size

UK Size M

USA Size 6

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


3.91 grams

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Andrew Campbell started trading in antiques during the 1970s. Initially, Andrew lived in the South of England, travelling the country, searching for items of silver to buy. Andrew sold these items at various London markets and antique fairs. Over time, and through selling at a range of venues, Andrew built up a large and diverse customer base from private buyers to national and international trade customers.
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T: +44 (0) 191 240 2645
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