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Antique Diamond Brooch with Onyx
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6.29ct Diamond and Onyx, Platinum Brooch - Art Deco - Antique Circa 1930

£6,545.00

A stunning antique Art Deco 6.29 carat diamond and black onyx, platinum brooch; part of our diverse antique jewellery and estate jewelry collections

SKU C2376

This stunning, fine and impressive Art Deco diamond brooch has been crafted in platinum.


The iconic Art Deco design geometric frame is ornamented with a feature 0.42ct and 0.45ct Old European round cut diamond, pavé set within a square setting to each terminal.


Either end of the brooch is further embellished with individually set diamonds within a collared stepped design.


The pierced decorated stepped design is conjoined via a cut cornered border ornamented with twenty-six pavé set Old European round cut diamonds.


The inner border is accented with twenty-two channel set scissor cut onyx.


The brooch secures to the reverse with a hinged pin and clasp.


This antique Art Deco brooch has been independently tested using state of the art technology (Niton XL2 Analyzer) and verified as platinum.


The brooch is supplied with two independent diamond grading certificates, in addition to a diamond grading report card for the supporting stones.


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.


This stunning antique brooch is exceptional quality, set with black onyx and very high colour graded old cut diamonds displaying a fine white colour, brilliance and presence.

The brooch is an exceptional gauge of platinum and is in excellent condition.


Reflections in photographs may detract from the true representation of this fine example of antique diamond jewellery.


Feature Diamond One

Colour H

Clarity VVS2

Cut Old European round

Content 0.42 carat

Dimensions 4.76mm x 4.73mm x 2.67mm


Feature Diamond Two

Colour H

Clarity VS2

Cut Old European round

Content 0.45 carat

Dimensions 4.78mm x 4.77mm x 2.90mm


Supporting Diamonds

Colour (average grades) G/H

Clarity (average grades) VS2/SI2

Cut Old European round

Content (total) 5.42 carats


Total Diamond Content

6.29 carats


Length of Setting 5.1cm/2.01"

Width of Setting 2.45cm/0.96"

Height of Setting 4mm/0.16"


10.26 grams


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Proud Members of

International Federation of Art and Antique Dealer Associations CINOA
LAPADA THE ASSOCIATION OF ART & ANTIQUES DEALERS
National Association of Jewellery UK's trade association NAJ