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1.50 ct Diamond and Platinum Trilogy Ring - Antique Circa 1920

A stunning, fine and impressive antique 1.50 carat diamond and platinum three stone/trilogy ring; part of our antique jewellery and estate jewelry collections

SKU: W9961
1.50 ct Diamond and Platinum Trilogy Ring - Antique Circa 1920
1.50 ct Diamond and Platinum Trilogy Ring - Antique Circa 1920


This stunning diamond trilogy ring has been crafted in platinum.

The pierced decorated mount displays a stunning central 0.61 ct old European round diamond flanked by two slightly smaller old European round cut diamonds, all evenly colour matched and held in eight claw settings.

The elevated, tapering pierced decorated ring shoulders integrate with the claw setting and blend seamlessly with the plain platinum ring shank.

The interior of the shank displays a later engraved inscription: "To Kay 27/9/47" but this could be professionally removed if so desired.

This impressive antique platinum engagement ring is supplied with an independent diamond grading certificates for the feature diamond, in addition to a diamond grading report card (shown) for the supporting diamonds.

The fine platinum trilogy ring has been independently tested using state of the art technology (Niton XL2 Analyzer) and verified as platinum.

Learn about the symbolism of the trilogy ring


This platinum trilogy ring is fine quality, set with well colour matched, very high colour graded, high clarity graded diamonds.

The ring is a very good gauge of platinum and is in excellent condition.

Reflections in photographs may detract from the true representation of this impressive example of vintage diamond jewellery/estate jewelry.

Diamond Quality

Feature Diamond

Colour I

Clarity VVS1

Cut Old European round

Content 0.61 carat

Dimensions 5.59mm x 5.52mm x 2.78mm

Supporting Diamonds

Colour (average grades) I

Clarity (average grades) VS2- SI 1

Cut Old European round

Content (total) 0.89 carat

Total Diamond Content

1.50 carats

If you would like to view a copy of the diamond grading certificate, please contact us, providing your email address, and PDF files will be sent.


Width across setting 1.58cm / 0.62"

Height of setting 5.05mm / 0.19"

Ring Size

UK Size M 1/2

USA Size 6 1/4

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

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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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