2516: Granite, porphyry, basalt etc w/n roughly trimmed/merely cut to size

251611: Granite, crude or roughly trimmed 251612: Granite, merely cut, by sawing or otherwise, into blocks etc 251621: Sandstone, crude or roughly trimmed 251622: Sandstone, merely cut, by sawing or otherwise, into blocks etc 251690: Monumental or building stone nes 2516: Granite, porphyry, basalt etc w/n roughly trimmed/merely cut to size