18K Onyx and Diamond cocktail ring

A striking Art Deco cocktail ring that beautifully captures the bold elegance of its era.

Crafted in 18-karat white gold, this refined piece centres an elongated oval onyx cabochon whose deep, glossy black provides the perfect contrast to the brilliance of an old European-cut diamond. Additional rose-cut diamonds accent the shank, enhancing the ring with a subtle, vintage sparkle characteristic of Art Deco craftsmanship.

 

Details:

 

Era: Art Deco

Gemstone: Old European-cut diamond
Color: H–I
Clarity: SI1
Carat weight: 0.40

Gemstone: Rose-cut diamond
Color: H
Clarity: SI

Gemstone: Onyx
Cut: Cabochon
Measurements: 18.33 mm × 13.38 mm
Transparency: Opaque

Hallmark: Not present; tested as 18K
Metal: 18K white gold
Total weight: 5.0 g

 

Note:

 

All measurements and weights were taken in their settings, where indicated. The assessment was carried out by an independent GIA-certified gemologist. Measurements and weights may therefore vary slightly. The photos are part of the description. Please note that this is an antique piece and may show minor signs of age and wear.

CHF 1 800.00

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