2506.10.00.10
Sands (other than natural) containing by weight 95 percent or more of silica and not more than 0.6 percent of oxide of iron
Classification path
- Quartz (other than natural sands); quartzite, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape
- Quartz
- Sands (other than natural) containing by weight 95 percent or more of silica and not more than 0.6 percent of oxide of iron
Rates of duty
- General (MFN)
- Free
- Column 2Cuba, North Korea, Russia, Belarus
- Free
- Unit of quantity
- t
Related lines in heading 2506
About heading 2506
Quartz (other than natural sands); quartzite, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape
Heading 2506 covers quartz that is not natural sand, and quartzite, including quartzite that has been roughly trimmed or cut into blocks or slabs of rectangular or square shape. It splits first by material, quartz under 2506.10 and quartzite under 2506.20, then by grade or working: silica and iron oxide content for quartz, and crude versus further-worked for quartzite. All four lines are duty free under the general (MFN) rate.
Full guide to heading 2506Products in this heading
- Crushed quartz rock for industrial use
- High-purity quartz lump with low iron oxide content
- Quartzite blocks sawed into rectangular blocks
- Roughly trimmed quartzite for facing or flooring
- Quartz chips and granules from broken rock (not natural sand)
- Quartzite slabs cut by sawing
Frequently asked questions
What is the HTS code for quartz that is not natural sand?
Quartz other than natural sands is classified under 2506.10.00.50, with a general (MFN) rate of Free. If the quartz contains 95% or more silica and not more than 0.6% iron oxide, use 2506.10.00.10, also Free.
What is the duty on quartzite blocks?
Crude or roughly trimmed quartzite falls under 2506.20.00.10 and pays a general (MFN) rate of Free. Other quartzite, such as stone cut beyond rough trimming, goes under 2506.20.00.80, also Free.
How do I classify quartz rock that has been crushed?
Crushed quartz rock that is not natural sand is classified in 2506.10.00.50 at a general (MFN) rate of Free. If it meets the silica and low iron limits, classify it in 2506.10.00.10, also Free.
Source: USITC Harmonized Tariff Schedule, retrieved October 22, 2026.