Lumps
Andalusite, kyanite and sillimanite, in lump form
HSN 2508 50 31 (andalusite, kyanite and sillimanite — lumps) is not covered by a Bureau of Indian Standards Quality Control Order and carries no Partner Government Agency clearance requirement at the tariff-line level. Import follows the standard customs procedure: Importer-Exporter Code (IEC), bill of entry, commercial invoice, packing list. Other forms or processing states within Chapter 25 — calcined or powdered grades, or related refractory minerals such as mullite and chamotte — may fall under tariff lines that carry distinct compliance obligations.
The absence of compliance at this tariff line applies specifically to the lump form; calcined, powdered, or otherwise processed andalusite, kyanite, and sillimanite may be classified under a different tariff line within Chapter 25 and attract separate obligations. Re-classification on customs examination — for example, where the consignment is found to be calcined rather than raw — triggers retrospective compliance and potential detention pending resolution. Verify the physical form and processing state against the customs tariff before relying on the absence of compliance.