The enduring beauty of Bluestone.
Bluestone isn’t actually a specific type of stone. It’s a term for a number of different kinds of natural stones, formed over millions of years of volcanic activity.
Stonehenge is built of Bluestone, there’s Bluestone all over New York and in Melbourne you can hardly find a historic building that isn’t built with Bluestone.
It’s a deep blue to begin with, and fades in the sun over time to a light natural grey. It’s durable and slip resistant, which is why it’s used a lot in areas of heavy traffic.