Cartier Clash Diamond and Black Onyx Spiked Dome Ring in 18K Gold

Cartier Pavé Diamond Dome Ring with Sculptural Black Onyx Spikes

This Cartier diamond and black onyx ring combines approximately 3.7 carats of diamonds with a bold spiked dome design in 18K white gold. Closely set diamonds cover the rounded top, while polished black onyx cones rise above the surface, creating a striking interplay of brilliance, depth, and sculptural form.

The ring’s broad bombé silhouette gives the gemstones a curved canvas. Across this domed surface, the pavé-set round diamonds create a closely packed field of sparkle, following the contours of the setting around the individual onyx accents. The white gold complements the diamonds and provides a crisp setting for the black stones.

The polished black onyx spikes define the ring’s distinctive appearance. Their smooth, reflective surfaces contrast with the intricate texture of the diamond pavé, while their pointed shapes introduce a geometric rhythm across the rounded dome. Viewed from above, the onyx forms a graphic pattern against the diamonds; viewed from the side, the raised cones reveal the design’s pronounced three-dimensional character.

A polished white gold shank completes the composition. Its smooth surfaces provide a visual transition from the richly decorated top to the underside of the ring, allowing the diamond and onyx arrangement to remain the focal point. The combination of a rounded profile and pointed gemstone accents gives this Cartier cocktail ring a strong presence.

Inside the band, the ring bears the Cartier signature, the 750 gold purity mark, the size 52 stamp, an individual serial number, and a maker’s mark. The serial number matches the number recorded on the accompanying Cartier certificate. The ring is presented with a red Cartier presentation box, complementing the signed jewel and its documentation.

Marked European size 52, approximately US size 6, this diamond and black onyx dome ring makes a compelling statement worn on its own. Its monochrome palette works particularly well with evening attire, tailored clothing, and understated accessories that allow the sculptural setting to take center stage.

For those seeking signed Cartier jewelry with bold proportions and distinctive gemstone detailing, this ring brings together substantial diamond presence, polished black onyx, and an expressive dome silhouette. Available from DSF Antique Jewelry, it offers a striking interpretation of the diamond cocktail ring.

Key Features

• Maker: Cartier
• Metal: 18K white gold
• Diamonds: Approximately 3.7 carats total weight
• Diamond setting: Pavé-set round diamonds
• Additional gemstones: Black onyx, fashioned as raised spikes
• Design: Spiked bombé dome ring
• Ring size: European 52 / approximately US 6
• Signature and marks: Cartier, 750, 52, individual serial number, and maker’s mark
• Accompaniments: Cartier presentation box and matching Cartier certificate
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• Metal: 18K white gold
• Diamonds: Approximately 3.7 carats total weight
• Diamond setting: Pavé-set round diamonds
• Additional gemstones: Black onyx, fashioned as raised spikes
• Design: Spiked bombé dome ring
• Ring size: European 52 / approximately US 6
• Signature and marks: Cartier, 750, 52, individual serial number, and maker’s mark
• Accompaniments: Cartier presentation box and matching Cartier certificate

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