Matte Black Onyx Nature Onyx Gemstone with One-line Round Bead 12mm 15.5''
Onyx is a variety of chalcedony that is similar to agate, with straight rather than curved bands. Nearly all black onyx on the market has been rendered a uniform, permanent black color with a treatment by sugar and acid or heat. This process has been used on onyx for thousands of years and does not decrease the value of the stone.
- Condition: Matte face black onyx heated with one-line
- Shape : Round
- Size : 12mm
- Color : Black
- Length : 15.5''per strand
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