Bluestone is the name given to several stones: (1) a feldspathic sandstone in the U.S., (2) a form of dolerite which appears blue when wet or freshly broken in Britain, and (3) a basalt or olivene basalt in Australia.
Diabase Feldspar Sandstone Pennsylvania Bluestone Williamstown Lighthouse Irish Sea Glacier Deaf Children Australia Boscombe Bowmen Hawthorn Bridge Victoria Barracks, Melbourne Victorian College for the Deaf Princes Bridge, Melbourne Preseli Hills Port Fairy, Victoria Old Melbourne Gaol Sarsen Clifton Hill, Victoria Flagstone St Patrick's Cathedral, Melbourne HM Prison Pentridge Bourke Street, Melbourne Greywacke Southbank, Victoria Portland, Victoria Melbourne Grammar School Victorian gold rush Pennsylvania Susquehanna County, Pennsylvania Ballarat, Victoria Merlin Paleozoic Catskill Mountains Ulster County, New York New York Geelong, Victoria Devonian Quarry Stonehenge Basalt Diamond