What Is Andesite Stone?
Andesite stone is a fine-grained volcanic rock formed from the cooling of basaltic magma, primarily composed of plagioclase feldspar and pyroxene minerals. Quarried from the volcanic highlands of West Java, Indonesia, our andesite exhibits exceptional hardness (6–7 on the Mohs scale), very low water absorption (<2%), and natural slip resistance — making it one of the most versatile natural stones for both interior and exterior applications.
Every slab is quarried using traditional Indonesian methods that preserve the structural integrity of the stone, resulting in a material that combines old-world craftsmanship with modern performance standards.
Andesite Stone Specifications
| Stone Type | Andesite (Volcanic Rock) |
|---|---|
| Origin | West Java, Indonesia |
| Color | Charcoal Gray, Dark Gray, Silver Gray |
| Finish Options | Natural Split | Honed | Bush Hammered | Sandblasted |
| Standard Sizes | 30×30 cm | 40×40 cm | 60×30 cm | 60×60 cm | 10×40 cm | Custom |
| Thickness | 2 cm | 3 cm | Custom on request |
| Hardness (Mohs) | 6–7 |
| Water Absorption | <2% |
| Min. Order Quantity | 1 × 20ft container |
| Export Format | 20ft & 40ft container |
Applications of Andesite Stone
Thanks to its density, hardness, and natural texture, andesite stone is suited to a wide range of interior and exterior applications:
- Exterior paving & driveways — handles heavy foot and vehicle traffic; non-slip natural split finish
- Pool coping & surrounds — slip-resistant and UV stable, ideal around water features
- Wall cladding (interior & exterior) — charcoal-gray tones create a sophisticated contemporary aesthetic
- Garden paths & walkways — natural look that blends with landscaping
- Steps & stair treads — strong enough for high-traffic staircases
- Feature walls & decorative panels — popular in hotels, resorts, and residential projects
- Hotel lobbies & resort landscaping — widely used across Bali hospitality projects
Why Source Andesite Stone from Indonesia?
Indonesia is one of the world’s leading producers of andesite stone due to its rich volcanic geology. Our quarry in West Java provides access to some of the most consistent-quality andesite deposits available, with:
- Uniform dark-gray coloration with minimal variation
- Dense structure with low porosity — resists staining and weathering
- High compressive strength — ideal for heavy-load applications
- Competitive quarry-direct pricing compared to imported alternatives
Export & B2B Ordering
We supply andesite stone in 20ft and 40ft containers with complete export documentation including Bill of Lading, Certificate of Origin, commercial invoice, and packing list. Custom cutting and sizing is available for project-based orders.
Current export markets include Asia, the Middle East, Europe, and South America. Contact us today for a price quote and free sample.





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