Renowned for its durability, Australian Porphyry is an igneous rock (formed through the cooling and solidification of magma or lava) consisting of large-grained crystals such as quartz. The versatility and beauty of this stone will be a beautiful addition to any design with its unique colour blend of grey shades with deep russet and gold colours. Use as cobbles in driveways, courtyards, patios, or as a feature garden border.