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Description
Black Onyx, also known as black agate, is dyed black chalcedony. Chalcedony is composed of tiny 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 distinctive, uniform shiny black color. Black Onyx is the top-selling chalcedony in the jewelry market and has a rich history as a staple of Art Deco jewelry design.
These round cabochons feature a clean, opaque black appearance that pairs well with a wide range of metal types and setting styles, making them a versatile choice for professional jewelers and metalsmiths.
Features
- Uniform opaque black color throughout
- Dyed black chalcedony (grey chalcedony treated to achieve black coloration)
- Round cabochon cut
- Treatment: Dyed
- Clean with warm, soapy water; ultrasonic and steam cleaning are generally considered safe
Specifications
| Stone Type | Black Onyx (Dyed Black Chalcedony) |
|---|---|
| Cut | Round Cabochon |
| Color | Uniform Opaque Black |
| Treatment | Dyed |
| Care | Warm soapy water; ultrasonic and steam cleaning are generally safe |
Available Options
| Part # | Size |
|---|---|
| 947-R04 | 4mm |
| 947-R06 | 6mm |
| 947-R08 | 8mm |
| 947-R10 | 10mm |
| 947-R12 | 12mm |
| 947-R14 | 14mm |
| 947-R16 | 16mm |
| 947-R18 | 18mm |
Specifications
- Brand
- Otto Frei
- Part #
- Varies by size
- Type
- Cabochon
- Dimensions
- 0.1 in x 0.1 in x 0.1 in
- Stone Type
- Black Onyx (Dyed Black Chalcedony)
- Cut
- Round Cabochon
- Color
- Uniform Opaque Black
- Treatment
- Dyed
- Care
- Warm soapy water; ultrasonic and steam cleaning are generally safe
California Prop 65 Warning:Cancer and Reproductive Harm. www.P65warnings.ca.gov.
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