| Hardness | Mohs | 3-4 |
| Unit Volume Weight | gr/cm3 | 2.74 |
| Density | gr/cm3 | 2.76 |
| Water absorption at atmospheric pressure | by weight - % | 0.1 |
| by volume - % | 0.3 | |
| Water absorption at boiling water | by weight - % | 0.1 |
| by volume - % | 0.2 | |
| Porosity | % | 0.3 |
| Compressive strength | kg/cm2 | 688 |
| Compressive strength after freesing | kg/cm2 | 535 |
| Average Abrasion Strength | cm3/50 cm2 | 25 |
| Degree of pores | % | 0,7 |
| Modulus of Elasticity | kg/cm2 | 4,9 |
| Chemical analysis: | ||
SiO2 | 0,56 | |
| Fe2O3 | 0.57 | |
| CaO | 53.26 | |
| MgO | 1,42 |
