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Bluestone is a cultural or commercial name for a number of natural dimension or building stone varieties, including:
- basalt in Victoria, Australia, and in New Zealand
- dolerites in Tasmania, Australia; and in Britain (including Stonehenge)
- feldspathic sandstone in the US and Canada
- limestone in the Shenandoah Valley in the US, from the Hainaut quarries in Soignies, Belgium, and from quarries in County Carlow, County Galway and County Kilkenny in Ireland
- slate in South Australia
It is unrelated to human-made blue brick.