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Art Deco Black Onyx Brooch with Diamonds

Black Onyx and 0.16ct Diamond, Platinum Brooch - Art Deco - Circa 1930

A fine and impressive antique black onyx and 0.16 carat diamond, platinum set brooch; part of our antique estate jewelry collections

SKU C7752


This fine and impressive antique Art Deco brooch has been crafted in platinum.

The main portion of the brooch composed of an impressive 16.50ct cabochon cut black onyx.

Either side of the toroid-shaped onyx is embellished with pierced decorated iconic Art Deco collar designs, embellished with twelve Dutch cut diamond, totalling 0.16ct.

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

This stunning 1930's brooch is supplied with an independent diamond and gemstone grading report card.

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.

View the complete collection of antique brooches

This impressive antique brooch is excellent quality, set with an impressive black onyx and high colour graded diamonds displaying a fine white colour and brilliance.

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

Reflections in photographs may detract from the true representation of this impressive Art Deco black onyx brooch with diamonds.

Cut Cabochon

Content 16.50 carats

Colour (average grades) I

Clarity (average grades) P1

Cut Dutch

Content 0.16 carat

Number of Diamonds


Diameter 2.8cm/1.1"

Length of setting 3.1cm/1.22"

Across pin 2.3cm/0.91"

Height of setting 5.1mm/0.2"

4.54 grams

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International Federation of Art and Antique Dealer Associations CINOA
National Association of Jewellery UK's trade association NAJ