Slippery Rock Gazette | Where Did You Find that Granite?
Other states produce a lot of granite for slabs, as well. In the north, American Black comes out of Elverson, Pennsylvania. Barre Gray and Bethel White are out of Barre, Vermont. The quarries in Au Sable, New York produce Lake Placid Blue and Mountain Green. In the south, besides Virginia, Silver Cloud Imperial comes from Conyers, Georgia. Mt.