HTS 2516Granite, porphyry, basalt, sandstone and other monumental or building stone, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shapeAs of Revision 22 (2026), effective Oct 30, 2026Source: USITC HTS ↗Ask AI about this productChatGPTClaudePerplexityGoogle AIGrok