HSN code 2508: Other clays (not including expanded clays of heading 6806), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths.

HSN heading 2508 sits in chapter 25 (Salt; sulphur; earths and stone; plastering materials, lime and cement). It has 20 8-digit tariff items. On a tax invoice, businesses with turnover up to ₹5 crore show at least the 4-digit code 2508; above ₹5 crore, the 6-digit sub-heading.

⚠️About GST rates: GST rates on many goods changed from 22 September 2025, when most items moved to the 5% and 18% slabs and a few to 40%. This finder lists codes and descriptions only — confirm the rate for your item in the current CBIC rate notification before you invoice.

8-digit tariff items under 2508

HSN code	Description
25081010	Bentonite: Crude
25081090	Bentonite: Other (Includes Processed And Ground)
25082010	Decolourising Earths And Fullers Earth: Processed (Including Activated)
25082090	Decolourising Earths And Fullers Earth: Other
25083010	Fire Clay: Non-Plastic
25083020	Fire Clay: Semi-Plastic
25083030	Fire Clay: Plastic
25083090	Fire Clay: Other
25084010	Other Clays: Ball Clay
25084020	Other Clays: Earth Clay
25084090	Other Clays: Other
25085010	Andalusite, Kyanite And Sillimanite: Andalusite
25085021	Andalusite, Kyanite And Sillimanite: Kyanite: Crude, Other Than Calcined
25085022	Andalusite, Kyanite And Sillimanite: Kyanite: Processed, Other Than Calcined (Washed Or Grou…
25085023	Andalusite, Kyanite And Sillimanite: Kyanite: Calcined
25085031	Andalusite, Kyanite And Sillimanite: Sillimanite: Lumps
25085032	Andalusite, Kyanite And Sillimanite: Sillimanite: Fines (Including Sand)
25085039	Andalusite, Kyanite And Sillimanite: Sillimanite: Other
25086000	Mullite
25087000	Chamotte Or Dinas Earths

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