ASTM C119 (Standard Terminology Relating to Dimension Stone) defines dimension stone as follows:
Dimension stone as used here is natural stone that has been selected and fabricated to specific sizes or shapes, with or without one or more mechanically dressed or finished surfaces, for use as building facing, curbing, paving stone, monuments and memorials and various industrial products. The term dimension stone is in contradistinction to crushed and broken stone, such as is used for aggregate, roadstone, fill or chemical raw materials. Because all stone is a natural material, the definition excludes all manmade materials that simulate stone. In common practice, some dimension stones are reinforced, filled or surface treated.
Capricorn Sandstone Quarry – Queensland Australia