More Information
| Stone Type | Natural |
| Origin | Russia |
| Common gemstone enhancement and likelihood | None |
| Size | 4mm |
| Shape | Round |
| Colour | Black |
| Hole Size Approximate (mm) | 0.6 |
| Mohs scale ratings (hardness) | 3.5 |
| Additional Notes | Please note these beads may leave a black residue on surfaces due to their carbon content. |