Obsidian Black

Other names - Black Rain / black basalt / G684

Technical Data

▪  Density (g/cm3) ——  3.03 g/cm3 or 189 lb/ft3
▪  Absorption (%)  —— 0.18%
▪  Compressive (Wet) (Mpa) ——  217 Mpa or 31450 psi
▪  Flexural strength (Wet) (Mpa) —— 18.6 Mpa or 2700 psi