2506.10.00.50 - Other

This HTS category, 2506.10.00.50, encompasses "Other" quartz and quartzite that do not meet the specific criteria of its sibling category. It includes quartz that is not in its natural sand form and quartzite, regardless of whether it has undergone basic shaping processes like rough trimming or sawing into rectangular blocks or slabs. The key characteristic here is the material itself – quartz or quartzite – and its processing beyond the natural state, excluding sand-like forms.

This classification is distinct from HTS 2506.10.00.10, which specifically covers sands containing a high percentage of silica (95% or more) and a low percentage of iron oxide. The primary differentiator lies in the physical form; this category deals with more consolidated masses of quartz and quartzite, whereas the sibling addresses granular, sand-like material meeting precise chemical composition requirements.

As a leaf node, this category does not have further subcategories. Classification into this HTS code hinges on identifying the material as quartz or quartzite and confirming it is not a natural sand conforming to the sibling's definition. The "Other" designation signifies that it represents all quartz and quartzite that do not fit into more specifically defined sub-classifications, focusing on the mineral content and basic processing of the material.