2515.20.00.00 - Other calcareous monumental or building stone; alabaster

This HTS category, 2515.20.00.00, specifically covers calcareous monumental or building stone and alabaster that are not classified under the preceding subheading. The defining characteristic for inclusion here is that these stones are *other* than marble and travertine, despite sharing similar applications as monumental or building stone. This includes a variety of stones such as limestone, sandstone, and dolomite, which are primarily valued for their aesthetic appeal and workability in construction and decorative projects. The material may be presented in a rough, trimmed, or merely sawn block or slab form, with rectangular shapes being explicitly permitted.

While the preceding sibling category, 2515.10, encompasses marble and travertine, this subheading focuses on other calcareous stones. The distinction lies in the geological composition and therefore the visual and physical properties that differentiate them from marble and travertine, even though they might serve similar purposes. The key factor for differentiating from other stone categories (outside of Chapter 25) would be the calcareous nature, meaning they are primarily composed of calcium carbonate or dolomite.

As this node is a leaf node in the HTS structure, there are no further subcategories to explore. Therefore, classification within this code is definitive based on the material being a calcareous monumental or building stone, or alabaster, and not being marble or travertine. Practical classification often relies on visual inspection, geological analysis, or supplier documentation confirming the specific type of stone and its intended use as monumental or building material.