Blue onyx, also known as blue agate, is dyed chalcedony — a microcrystalline quartz whose fine crystal structure is invisible to the unaided eye. Prized for its uniform translucent blue color, this stone has been a staple of jewelry making for nearly 3,000 years, valued for its versatility in carving, engraving, cameos, and signet work. These round cabochons offer jewelers and metalsmiths a consistent, ready-to-set stone in a range of sizes suited for rings, pendants, earrings, and more.
Features
- Dyed blue chalcedony (blue onyx / blue agate)
- Uniform translucent blue coloration throughout
- Round cabochon cut for versatile setting applications
- Treatment: Dyed
- Available in eight sizes from 6 mm – 20 mm
- Clean with warm, soapy water; ultrasonic and steam cleaning are generally safe
Specifications
| Stone Type |
Blue Onyx (Blue Agate / Dyed Chalcedony) |
| Cut |
Round Cabochon |
| Treatment |
Dyed |
| Transparency |
Translucent |
| Cleaning |
Warm soapy water; ultrasonic and steam are generally safe |
Available Options
| Part # |
Size |
| 947-B06 |
6 mm |
| 947-B08 |
8 mm |
| 947-B10 |
10 mm |
| 947-B12 |
12 mm |
| 947-B14 |
14 mm |
| 947-B16 |
16 mm |
| 947-B18 |
18 mm |
| 947-B20 |
20 mm |
California Prop 65 Warning: