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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