Crushed Volcanic Pumice Chunks from Japan
Irregular chunks of pumice stone crushed during mining but not further refined, sized roughly 5-15 cm, ideal for tumbling into lapidary abrasives. Classified under HTS 2513.10.00.10 for crude or crushed pumice not cut to dimensions or powdered. Retains natural vesicular structure for filtration and polishing applications.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Document crushing as a mining byproduct, not manufacturing; photos of irregular shapes help customs avoid misclassification as processed grit
• Test for purity to exclude garnet or corundum admixtures that could shift to other subheadings; silica content reports aid compliance
• Bulk shipments prone to dust loss—use sealed containers and declare net weight post-settling to prevent valuation disputes