At Bamstone only state-of-the-art machinery is used in production, while the ownership of captive quarries ensures a consistent supply of quality stone. Bluestone (Basalt) The captive bluestone quarry sites are located in South West Victoria, close to the company’s production facility. Great care is used in the extraction of the stone, ensuring a consistently high grade raw material. Victorian Work Authority Numbers WA959, WA1466 and WA006539 Granite Bamstone can supply granite products from an extensive range of both Australian and imported granite. Standard range: Harcourt Riverina Verde Austral Adelaide Black Grandee Calca red