Product classification
HS code for Slate blocks: 2514.00
Slate, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape.
Classification of slate blocks under HS 2514.00
Slate blocks are classified under HS code 2514.00. This heading covers slate in its natural state, whether or not it has been roughly trimmed or merely cut by sawing or other means into blocks or slabs of a rectangular or square shape. The classification is determined by the level of processing; the stone must not have reached the stage of being "worked" stone. If the slate has been further processed—for example, by being polished, chamfered, or shaped into specific items like roofing tiles—it would move to Chapter 68. Heading 2514 is strictly for the raw or minimally processed mineral material intended for further industrial or architectural use. The Harmonized System distinguishes between raw mineral products (Chapter 25) and articles made of stone (Chapter 68) based on the degree of finishing and shaping.
- Covers
- Raw slate blocks
- Sawn slate slabs (unworked)
- Roughly trimmed slate
- Rectangular slate blocks for further processing
- Square-cut slate slabs
- Also under 2514.00
- Cupa Pizarras (Spanish slate)
- Vermont Structural Slate Company (USA)
- SSQ Slate (UK/Argentina slate)
- Welsh Slate (UK)
Codes often confused with 2514.00
Common mistake. Slate blocks are most commonly misclassified under 6803.00, which covers worked slate and articles of slate, such as finished roofing shingles or billiard table tops. They may also be confused with 2515.11 (marble blocks) or 2516.11 (granite blocks) if the geological nature of the stone is not correctly identified by the importer.
Top exporters and importers of HS 251400 (the code used for slate blocks), 2025
In 2025, the largest exporter of HS 251400 (the code used for slate blocks) in UN Comtrade data was France, with 27% of world exports; the largest importer in UN Comtrade data was Italy, with 11% 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 251400, not only slate blocks.
Top exporters 2025 · share of world exports
- 1 France $13M 27% of world exports
- 2 India $8.4M 17% of world exports
- 3 Spain $7.7M 16% of world exports
World total: $48M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Italy $6.2M 11% of world imports
- 2 Denmark $5.1M 8.6% of world imports
- 3 Portugal $5.0M 8.4% of world imports
World total: $59M 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 slate blocks
Brazil classifies slate blocks under NCM 2514.00.00: HS 2514.00 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about slate blocks
What is the HS code for Slate blocks?
The HS code for Slate blocks is 251400 (Slate; whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape). The HS code for slate, whether or not roughly trimmed or merely cut into blocks or slabs, is 2514.00.
How do I classify Slate blocks for customs?
Slate blocks is classified under HS code 251400 — Slate; whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape. This is a 6-digit subheading level code.
When does slate move from 2514 to 6803?
Slate moves to 6803.00 once it has been further worked beyond simple sawing or rough trimming, such as being split into thin tiles, polished, or edge-finished.
Which countries are the top exporters of slate blocks (HS 251400)?
In 2025, the top exporters of HS 251400 (the code used for slate blocks) in UN Comtrade data were France ($13M, 27% of world exports), India ($8.4M) and Spain ($7.7M). World exports came to about $48M, 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 slate blocks (HS 251400)?
In 2025, the top importers of HS 251400 (the code used for slate blocks) in UN Comtrade data were Italy ($6.2M, 11% of world imports), Denmark ($5.1M) and Portugal ($5.0M). World imports came to about $59M, 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 Slate blocks the same in all countries?
The base HS code 251400 for Slate blocks 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 slate blocks in Brazil?
In Brazil, slate blocks (HS 251400) is classified under NCM 2514.00.00.