PORPHYRY
This volcanic or igneous rock is formed during a slow cooling process, giving it high compressive strength and density. Known for its large feldspar crystals, with its warm colours of grey, red, buff and purples, this a popular hard landscaping material. Offering very high technical data properties, porphyry is a unique combination of aesthetics and durability and was prized in historic times.
![](https://keystonesupplies.ie/wp-content/uploads/2015/02/Italian-Porphyry-Company-Ge1-150x150.jpg)
![](https://keystonesupplies.ie/wp-content/uploads/2015/02/chinese_red2-150x150.jpg)
![](https://keystonesupplies.ie/wp-content/uploads/2015/02/chinese_purple-150x150.jpg)
![](https://keystonesupplies.ie/wp-content/uploads/2015/02/brown_porphyry-150x150.jpg)
![](https://keystonesupplies.ie/wp-content/uploads/2015/02/green-grey-150x150.jpg)