What kind of stone is bluestone?

Asked by: Alejandra Viswanathan

sandstoneIn the U.S. it is usually a kind of sandstone. It is deep blue in colour, but in other areas of the U.S ,it is a variety of limestone that was formed in deep water and had less subjection to light.

How do you identify bluestone?

There's two basic texture types in bluestone. There's natural cleft which we're looking at right now in which there's a slightly rough finish. And you can see some of the finish.