These rocks are sourced from Northern NSW and are very hard and durable rock to work with.They are either Quarried or pulled out of the ground in boulder form and are of a blue volcanic material inside, can sometimes have an earthy crust on them when in a boulder form or even a black colour with moss when found on top of the ground. I can supply in 10 or 22 ton loads or you can pick up from my yard with your trailer.
