Antique Buff Top Double Bevel Genuine Black Onyx

Black Onyx, also known as black agate, is dyed black chalcedony. Chalcedony is composed of microscopic quartz crystals not visible to the naked eye. Natural black chalcedony is exceptionally rare — virtually all black chalcedony on the market is grey chalcedony that has been chemically treated to achieve its rich, uniform black color. Black Onyx is the top-selling chalcedony in the market and has a long history in fine jewelry, most notably as a staple of Art Deco design. These genuine cabochons feature an antique buff top with a double bevel profile, making them well suited for rings, pendants, brooches, and other classic settings.

Features

• Genuine black onyx cabochons — not synthetic or simulated
• Antique buff top with double bevel cut for a refined, classic profile
• Uniform opaque black color throughout
• Dyed black chalcedony — industry-standard treatment for this stone type
• Suitable for use in Art Deco-inspired and traditional jewelry designs

Specifications

Available Options

Notes

As with all dyed stones, avoid prolonged exposure to harsh chemicals or abrasives that may affect the surface treatment. Ultrasonic and steam cleaning are generally considered safe for black onyx, though care should always be taken with set stones.

California Prop 65 Warning:
Cancer and Reproductive Harm. www.P65warnings.ca.gov.