14mm crushed basalt. Dense dark stone for concrete and exposed aggregate finishes.
Crushed basalt in a 14mm grade, one of the hardest and densest aggregates going around. The near-black colour is why concreters ask for it in exposed aggregate driveways and honed finishes.
The near-black colour is why concreters ask for it in exposed aggregate driveways and honed finishes, and it performs just as well hidden inside a standard mix or a drainage trench. Supplied to order from WA quarries.
| Grading | 14mm nominal |
|---|---|
| Material | Crushed basalt |
| Colour | Dark grey to near black, darker when wet |
| Shape | Angular and hard wearing |
| Supply | Quarry direct, supplied to order |
| Minimum order | 12 tonnes |
| Approx. density | 1.5 tonnes per m³ loose |
| Coverage | About 6.7 m² per tonne at 100mm depth |
| Supplied | Quarry Direct, sourced from trusted WA quarries and pits |
| Delivery | Perth metro on our own fleet, or pick up from Hope Valley |
Density here is our best estimate, not a weighed figure. Ring the yard if it matters for your job.
Sold by the cubic metre or tonne and delivered on our own trucks, tipped on site, or picked up from Hope Valley, where there's no minimum. Supplied to order from WA quarries, so let us know your tonnage and we'll confirm stock and a delivery date.
Not sure how much you need? The volume calculator works out cubic metres and tonnes from your measurements and drops the result straight into a quote request. At 100mm deep, one tonne of basalt (14mm) covers about 6.7 square metres.
It weighs around 1.5 tonnes per cubic metre. For a standard concrete mix, quantity depends on your mix design, so tell us your slab area and thickness and we can help, or use our calculator as a general guide. Either way, a delivered load carries a 12 tonne minimum. If your job needs less than that, collect it yourself from Hope Valley instead, where no minimum applies.
Yes, 12 tonnes on a delivered load. That covers all our gravels, quartz and basalt. We can go under that if you really need to, but the transport cost per tonne is a lot higher so we don't recommend it for a small job. There's no minimum if you collect it yourself from Hope Valley.
Its near-black colour stands out in exposed aggregate and honed finishes, and it's one of the hardest, densest aggregates available.
Yes, the dark grey to near black colour deepens further when wet.
Yes, it performs well hidden inside a standard concrete mix as well as visible in exposed aggregate and decorative work.
Laterite road gravel, also spelt ferricrete. Nominal 12mm, binds down hard for drives and tracks.
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