Product classification
HS code for Kyanite: 2508.50
Clays (excluding expanded clays of heading no. 6806), andalusite, kyanite and sillimanite, whether or not calcined.
Classification of kyanite under HS 2508.50
Kyanite is classified under HS code 2508.50, which specifically covers andalusite, kyanite, and sillimanite. This classification is governed by the General Rules of Interpretation (GRI) 1, which dictates that classification is determined by the terms of the headings and any relative section or chapter notes. As a naturally occurring mineral, kyanite falls under Chapter 25, which encompasses salt, sulfur, earths, and stone. The mineral is an aluminosilicate often used in the production of refractory materials due to its ability to expand significantly when heated, forming mullite. The classification remains consistent whether the kyanite is in its raw state or has undergone calcination (heating to high temperatures to change its physical properties). Because it is primarily traded as an industrial mineral for high-heat applications rather than an ore for aluminum extraction, it is excluded from Chapter 26 and placed firmly within the earths and clays of Chapter 25.
- Covers
- Raw kyanite ore
- Calcined kyanite
- Kyanite concentrates
- Kyanite sand and flour
- Andalusite and sillimanite (under the same subheading)
- Also under 2508.50
- Imerys Refractory Minerals (andalusite, kyanite)
- LKAB Minerals (sillimanite)
- Minco (kyanite)
- Andalusite Resources
- Damrec.
Codes often confused with 2508.50
Common mistake. Kyanite is frequently misclassified under HS code 2606.00, which covers aluminum ores and concentrates. While kyanite contains aluminum, it is not commercially processed as an ore for aluminum metal production, making 2606.00 incorrect. Another common error is using HS code 3816.00, which is for refractory cements and mortars. While kyanite is an ingredient in these products, the raw mineral itself must stay in Chapter 25. Additionally, kaolin and other clays under 2507.00 are sometimes confused with kyanite, but kyanite's specific crystalline structure and chemical formula (Al2SiO5) distinguish it from kaolinitic clays.
Top exporters and importers of HS 250850 (the code used for kyanite), 2025
In 2025, the largest exporter of HS 250850 (the code used for kyanite) in UN Comtrade data was South Africa, with 35% of world exports; the largest importer in UN Comtrade data was Germany, with 15% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 250850, not only kyanite.
Top exporters 2025 · share of world exports
- 1 South Africa $44M 35% of world exports
- 2 France $32M 25% of world exports
- 3 United States $19M 15% of world exports
World total: $127M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Germany $19M 15% of world imports
- 2 Spain $16M 13% of world imports
- 3 China $14M 11% of world imports
World total: $125M Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for kyanite
Brazil classifies kyanite under NCM 2508.50.00: HS 2508.50 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about kyanite
What is the HS code for Kyanite?
The HS code for Kyanite is 250850 (Clays (excluding expanded clays of heading no. 6806); andalusite, kyanite and sillimanite, whether or not calcined). The primary HS code for Kyanite is 2508.50, which includes andalusite and sillimanite.
How do I classify Kyanite for customs?
Kyanite is classified under HS code 250850 — Clays (excluding expanded clays of heading no. 6806); andalusite, kyanite and sillimanite, whether or not calcined. This is a 6-digit subheading level code.
Does calcining kyanite change its HS code?
No, HS code 2508.50 explicitly includes these minerals whether or not they have been calcined.
Which countries are the top exporters of kyanite (HS 250850)?
In 2025, the top exporters of HS 250850 (the code used for kyanite) in UN Comtrade data were South Africa ($44M, 35% of world exports), France ($32M) and the United States ($19M). World exports came to about $127M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of kyanite (HS 250850)?
In 2025, the top importers of HS 250850 (the code used for kyanite) in UN Comtrade data were Germany ($19M, 15% of world imports), Spain ($16M) and China ($14M). World imports came to about $125M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Is the HS code for Kyanite the same in all countries?
The base HS code 250850 for Kyanite is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for kyanite in Brazil?
In Brazil, kyanite (HS 250850) is classified under NCM 2508.50.00.