Natural Corundum Chunks
Irregular pieces of natural corundum, a crystalline form of aluminum oxide found in mineral deposits like those in India or Greece. Supplied crude without refinement for use in abrasive manufacturing. Falls under HTS 2513.20.1000 as crude natural abrasives in irregular form.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If calcined or sintered
Chemically processed corundum is treated as artificial aluminum oxide under Chapter 28.
If formed into refractory bricks
When shaped for high-temperature industrial use, it becomes a refractory product.
If crushed into sharp grains
Processed into specific natural abrasive grains for blasting, under worked abrasives.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Provide geological assay reports proving natural origin to avoid synthetic misclassification
• Avoid cleaning or minor processing that could alter classification to subheading 2513.20.20
• Declare exact dimensions if bordering on 'regular pieces' to prevent customs disputes
Related Products under HTS 2513.20.10.00
Raw Natural Garnet Pieces
Crude, irregular fragments of almandine garnet mined from alluvial deposits, used primarily as waterjet cutting abrasive feedstock. Not heat-treated or sized, maintaining natural irregular shapes. HTS 2513.20.1000 covers these other natural abrasives in crude form.
Crude Natural Quartz Pebbles
Irregular river-washed quartz pebbles selected for high silica content and hardness as tumbling abrasives. Supplied in crude bulk without crushing or grading. Classified as other natural abrasives under HTS 2513.20.1000 in irregular pieces.
Unprocessed Staurolite Sand Lumps
Crude, irregular lumps of staurolite mineral from Georgia deposits, valued for its angular hardness in paint and abrasive applications. Heat-treated versions exist but this is raw. HTS 2513.20.1000 for crude other natural abrasives.
Raw Olivine Sand Chunks
Irregular pieces of forsterite olivine from Norwegian or North Carolina mines, used as foundry abrasive and slag conditioner. Crude form without sizing. Fits HTS 2513.20.1000 as other natural abrasives.
Crude Natural Magnetite Pieces
Irregular magnetite lumps containing emery-like abrasive properties from iron ore deposits. Used in heavy media separation and abrasives. HTS 2513.20.1000 crude form.
Irregular Garnierite Chunks
Crude garnierite (nickel silicate) pieces with natural abrasive texture from laterite deposits. Used in polishing compounds. Under 2513.20.1000.