Note: Natural stones are a product of nature and therefore variations in tones, shadowing, veining, texture and colour are inherent. Images and samples only represent the general characteristics of the stone.
| Stone type | Onyx |
| Color | grey |
| Origin | Turkey |
| Compressive strength (kg/cm²) | 940 |
| After freezing (kg/cm²) | 930 |
| Ultimate tensile strength (kg/cm²) | 125 |
| Coefficient of thermal expansion (mm/mcm°C) | 0 |
| Water absorption (%) | 0,15 |
| Impact test/min. fall height (cm) | 0 |
| Frictional Wear Test (mm) | 0 |
| Density (kg/cm³) | 2550 |
