… Granite, porphyry, basalt, sandstone and other monumental or building stone, whether or …
Explanatory notes
… 25.16 ‑ G ranite, porphyry, basalt, sandstone and other monu-mental or building stone, whether … rock formed by the agglomeration of quartz crystals with feldspar and mica. It varies in colour (grey, green, pink, …