Oval Blue Onyx Cabochon

Blue onyx, also known as blue agate, is dyed chalcedony — a microcrystalline quartz prized by jewelers and gem artists for its smooth, uniform translucent color and versatility in fabrication. Chalcedony has been used in jewelry for nearly 3,000 years, valued for its workability in carving, engraving, cameos, and signet applications. These oval cabochons offer a consistent, rich blue tone that pairs well with a wide range of metal settings and design styles.

Available in nine graduated sizes, from petite 6x4mm stones to substantial 25x18mm focal pieces, these cabochons are well-suited for rings, pendants, earrings, and brooches. The smooth domed profile and uniform coloration make them reliable choices for production work and one-of-a-kind designs alike.

Features

• Dyed chalcedony (blue onyx / blue agate)
• Uniform translucent blue color throughout
• Oval cabochon cut
• Treatment: Dyed
• Nine size options available, from 6x4mm to 25x18mm
• Suitable for rings, pendants, earrings, and brooches

Specifications

Available Options

Notes

• Clean with warm, soapy water. Use of ultrasonic and steam cleaners is generally considered safe.
• As a dyed stone, avoid prolonged exposure to harsh chemicals or abrasives that may affect the treatment.