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Volcanic basalt
Basalt Stone
The tight-grained counterpart to lava stone: denser, less porous and more uniform. Specified where a dark stone must meet technical performance requirements for commercial paving and rainscreen facades.
Dense, dark and dimensionally hard — the technical dark stone.
Where black lava stone is chosen for its open, characterful porosity, dense basalt is chosen for the opposite reason: a tight grain, low absorption and very uniform appearance. It is the more technical of the two dark stones.
Its hardness suits commercial and public paving, stair treads with heavy use, and mechanically fixed facade panels. It also resists staining better than lava stone, which makes it a safer specification for interior floors in hospitality projects.
Available in calibrated tile, large-format cut-to-size and thicker paving sections, with flamed and bush hammered finishes carrying high wet slip ratings.
At a glance
Material Data
| Also known as | Batu Basalt, Dense Java Basalt |
|---|---|
| Stone category | Volcanic basalt |
| Origin | East Java and Central Java, Indonesia |
| Natural colour | Uniform dark grey to black with a tight, fine grain and minimal visible porosity. |
| Available finishes | Flamed, Honed, Bush hammered, Sandblasted, Brushed, Machine cut |
| Standard sizes | 300 × 300 mm · 300 × 600 mm · 400 × 800 mm · 600 × 600 mm · 600 × 900 mm · 600 × 1200 mm · Cut to size |
| Thickness | 20 mm · 30 mm · 40 mm · 50 mm · Custom to project |
| Applications | Commercial paving, Facades, Rainscreen cladding, Stair treads, Interior flooring, Plazas, Landscape |
| Packaging | Crated on edge with plywood facing and heavy strapping; large-format panels ship in A-frame or purpose-built crates. |
| Minimum order | 1 × 20ft container |
Technical Information
Basalt Stone technical data
Typical ranges for Indonesian material. Where your specification requires documented values, request test data with your enquiry and we will confirm what we can provide for that batch before you order.
| Property | Typical value |
|---|---|
| Stone type | Dense basalt (volcanic) |
| Bulk density | 2,750 – 3,000 kg/m³ |
| Water absorption | 0.5 – 2 % |
| Compressive strength | 120 – 180 MPa |
| Flexural strength | 14 – 22 MPa |
| Slip resistance | R12 flamed |
| Frost resistance | Excellent — suitable for freeze–thaw climates |
| Abrasion resistance | Very high |
Gallery
Basalt Stone in use
Products
Produced in Basalt Stone
Applications
Where Basalt Stone is specified
Questions
Basalt Stone — FAQ
Yes. With water absorption typically under 2 % it performs well in Northern Europe, Canada and higher-altitude markets. Request the test data with your quotation if your specification requires documented values.
Up to 600 × 1200 mm as standard, larger subject to block size. For mechanically fixed systems send the bracket detail so we can machine kerfs or undercut anchor holes.
Request a Quotation
Request a quotation for Basalt Stone
Send product, finish, size, quantity and destination port for an FOB, CFR or CIF quotation.