Lava Stone

Lava Stone

A porous volcanic stone with dark color and many small cavities. It feels rough and lightweight for stone, with sharp pits, soot-like tones, and irregular cooled surfaces.

Common names

  • volcanic rock
  • lava rock
  • scoria
  • pumice stone

Search phrases

  • black porous rock
  • volcanic garden stone
  • lava rock landscaping
  • stone with holes

Common uses

  • Landscaping
  • Garden beds
  • Water features
  • Saunas
  • Wall accents

Choosing points

  • Best for exterior work, walls, and resort or hot-spring scenes where rough black volcanic stone helps the mood.
  • Porous lava rock can look dry and dusty, but darkens strongly when wet.
  • It is often used as loose rock or rough cladding rather than polished slabs.
  • Red-brown scoria and black lava stone create very different moods.

How it ages

  • The stone resists weather, but porous pieces can break, shed dust, or trap algae and minerals.

What to avoid

  • Do not assume every lava stone is suitable for heat, exterior, or food contact; porosity, sealing, and stone source must be checked.