Sawn Limestone Building Blocks
These are rectangular limestone blocks, simply sawn with flat surfaces, used primarily for constructing exterior walls and facades in residential and commercial buildings. Classified under HTS 6802.29.10.00 as calcareous stone (limestone is primarily calcium carbonate) that is other than marble, travertine, or alabaster, and worked only by simple cutting or sawing without further shaping.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If made of granite
Granite is a different stone type (igneous, not calcareous), falling under the granite subheading in the same worked stone category.
If further worked beyond simple sawing, like polished or sculpted
Additional processing like polishing or carving moves it from 'simply cut or sawn' to 'other worked monumental stone' subheadings.
If chemically or thermally treated for durability
Treated stone articles (e.g., for enhanced weather resistance) are classified under heading 6810 for artificially treated stone products.
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Import Tips & Compliance
• Verify stone composition via geological testing to confirm it's calcareous (high calcium carbonate) and not marble/travertine to avoid reclassification
• Provide certificates of origin and quarry documentation proving simple sawing process without polishing or carving
Related Products under HTS 6802.29.10.00
Planed Lithographic Limestone Slabs
Fine-grained lithographic limestone (calcareous Solnhofen type) sawn flat for potential printing or architectural use. Excluded litho stones are 8442, but building slabs stay in 6802.29.10.00.
Sawn Cement Rock Stone Blocks
Cement rock, an argillaceous calcareous limestone for cement production but usable as building stone, sawn into blocks. HTS 6802.29.10.00 if simply cut for monumental/building purposes.
Sawn Dolomitic Limestone Panels
Dolomitic limestone with predominant calcite (calcium carbonate) is sawn into panels for veneers and garden features. HTS 6802.29.10.00 for calcareous (calcite-rich) stone simply worked.
Cut Coquina Shellstone Blocks
Coquina, a limestone from cemented seashells (calcareous), is cut into blocks with flat faces for rustic walls and fireplaces. Fits HTS 6802.29.10.00 as simply sawn calcareous building stone.
Cut Tufa Stone Slabs
Tufa, a porous calcareous stone formed by mineral springs, is sawn into flat slabs for use in garden walls and decorative landscaping features. It fits HTS 6802.29.10.00 as a non-marbly calcareous building stone that is simply cut or sawn with even surfaces.
Sawn Coral Rag Stone Panels
Coral rag, a calcareous limestone from fossilized coral reefs, is cut into panels with flat surfaces for coastal building projects and retaining walls. Under HTS 6802.29.10.00 for its calcareous composition and simple sawn processing as building stone.