Texmateria
Andesite
A subdued gray volcanic stone with fine grain and reliable toughness. It is quieter than speckled granite, with low shine, worn edges, and subtle mineral flecks.
Common names
- gray volcanic stone
- andesite paving
- komatsu stone
Search phrases
- gray paving stone
- japanese garden stone
- volcanic gray stone
- stone steps gray
Common uses
- Paving
- Steps
- Curbs
- Garden stones
- Retaining walls
Choosing points
- Best for curbs, steps, paving, and exterior work where a calm hard gray stone is needed.
- Textured finishes make it useful outdoors where slip resistance matters.
- It often looks quieter and less speckled than granite.
- Edges and high points polish slightly with foot traffic.
How it ages
- Generally tough outdoors, though surface scaling and staining can appear with water and freeze-thaw.
What to avoid
- Do not use smooth andesite on wet exterior stairs or sloped walks without a slip-resistant finish.
