Polished onyx. Onyx is a banded variety of chalcedony, a form of silica (SiO2). The bands come in many different colours. Commonly, specimens of onyx contain bands of black or white or both, as in this specimen. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / RHYS LEWIS & MINH TAN PHAM, AHS, DECD, UNISA |
Modell-Rechte: | nicht erforderlich |
Länge: | 25 Sekunden |
Seitenverhältnis: | 16:9 |
Restrictions: | - |