2513.10.00.10 - Crude or in irregular pieces, including crushed pumice

This HTS classification, 2513.10.00.10, specifically designates pumice stone that is in its crude form or broken into irregular pieces, including pumice that has been crushed. This category encompasses the raw, unprocessed material, as well as material that has undergone a basic size reduction process without further refinement or treatment beyond crushing. The intended use is typically as an abrasive, as a lightweight aggregate in construction, or for other industrial applications where the porous and abrasive nature of pumice is beneficial.

This category is distinguished from its sibling, 2513.10.00.80 (Other), which would cover pumice stone that does not meet the criteria of being crude, in irregular pieces, or crushed. This might include pumice that has been shaped, cut, or further processed into specific forms, or perhaps washed or graded pumice that goes beyond simple crushing. The key differentiator lies in the degree of processing; 2513.10.00.10 focuses on the more rudimentary states of pumice.

As this is a leaf node within the HTS, there are no further subcategories to introduce. Therefore, classification under 2513.10.00.10 relies solely on accurately identifying the physical state of the pumice as described – crude, in irregular pieces, or crushed. This category serves as the definitive classification for pumice in these foundational forms, before any significant shaping or finishing occurs.