Basalt is a porous stone material with naturally-occurring holes that may remain unfixed or be factory-filled with resin or cement. It is also a volcanic stone that has been used in architecture for centuries to build roads and monuments which can still be seen today.

Basalts are rich in magnesium, feldspar, pyroxene and iron, with hints of olivine and amphibole; all of which are siliceous materials similar to those in granite. Although Basalts boast the durability of granite, they tend to have the consistent coloration, markings and subtlety of a limestone.