Tufa Stone Slabs from Mexico
Porous calcareous tufa stone slabs, naturally deposited and sawn into rectangular blocks for ornamental building stone. Exhibits specific gravity ≥2.5, used in garden walls and facades. Qualifies under HTS 2515.20.00.00 as other calcareous monumental stone.
Duty Rate — Mexico → United States
13%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Document natural vs. artificial formation to prevent confusion with agglomerated products
• Ensure slabs remain rectangular without decorative cuts to stay in unworked category
• Quarantine for pests common in porous natural stone; fumigate prior to export