Procuring natural stone during periods of shifting tariff policies requires evaluating the latest export volumes and duty classifications from South American supply chains. Recent trade data from Centrorochas, the Brazilian Natural Stone Association, shows that total Brazilian natural stone exports reached USD 1.24 billion during the ten-month period from January to October 2025. This figure represents a 20.3% increase compared to the same period in 2024. However, this growth masks a sharp divergence in the performance of different stone categories, directly driven by recent US trade policy updates.
Shifting Duties and the Impact on Granite and Marble
The implementation of an additional 50% US tariff on specific Brazilian stones has split the export market in two. Brazilian granite exports declined by 14.7% during the January–October 2025 period compared to the previous year. Similarly, marble exports recorded a 9.8% decline. These drops reflect the increased import costs faced by US buyers sourcing traditional silicate granites and carbonate marbles from Brazilian quarries. Soapstone, which is also subject to the additional 50% tariff, faced similar market pressures.
According to Tales Machado, President of Centrorochas, the performance highlights the need to leverage the country's diverse resources. "Brazil has the greatest geodiversity on the planet, with more than 1,200 varieties of natural stone, a unique potential that remains largely untapped in global trade," Machado said. Sourcing managers are adapting to these cost increases by reassessing project budgets and exploring alternative materials within the region.
The Role of Quartzite as the Export Growth Engine
In contrast to the declines in granite and marble, Brazilian quartzite experienced strong growth, acting as the primary engine offsetting those losses. This surge is directly linked to its tariff-exempt status in the United States. Under the current HTSUS schedule, only one specific classification—quartzite classified under HTSUS 6802.99.00—is exempt from the additional 50% tariff. This regulatory distinction has channeled US demand toward Brazilian quartzite slabs.
Quartzite is a metamorphic rock composed of recrystallized quartz grains. It offers a marble-like appearance combined with a Mohs hardness of 7 (verify per lot), making it highly desirable for high-end countertops and feature walls. The exemption has enabled Brazilian exporters to maintain competitiveness in the premium US market. Commenting on the performance, Tales Machado stated: "The strong performance of quartzites demonstrates that this approach works and that Brazil remains relevant and competitive."
Strategic Sourcing Considerations for B2B Importers
For B2B importers, the split in the Brazilian export market introduces new sourcing variables. Sourcing quartzite from Brazil requires verifying the exact HTSUS classification with the exporter before finalizing shipping documents. Importers must ensure that slabs are documented under HTSUS 6802.99.00 to avoid the additional 50% duty surcharge at US ports of entry. The surge in quartzite demand is also affecting quarry lead times and block availability in major processing hubs like Vitória.
Additionally, while granite and marble face higher import duties, their base quarry prices remain competitive. Buyers must calculate the total landed cost, including the 50% tariff, to determine if Brazilian granite remains viable compared to alternative origins. StoneTrades covers quartzite sourcing options, providing detailed reviews of mineral properties and quarry locations. Procurement managers should review block-specific samples and verify current freight rates to optimize their natural stone supply chains.
| Product Category | Export Value (Jan–Oct 2025) | Year-on-Year Change (Jan–Oct 2025 vs Jan–Oct 2024) | US Tariff Status |
|---|---|---|---|
| Total Natural Stone | USD 1.24 Billion | +20.3% | Varies by classification |
| Granite | (Not specified in USD) | -14.7% | Subject to +50% additional tariff |
| Marble | (Not specified in USD) | -9.8% | Subject to +50% additional tariff |
| Quartzite (HTSUS 6802.99.00) | Strong growth | Not specified (Offset declines) | Exempt from additional tariff |
Frequently Asked Questions
How did US tariffs affect Brazilian granite and marble exports?
Brazilian granite exports fell by 14.7% and marble exports declined by 9.8% during the January–October 2025 period. These declines were driven by the imposition of an additional 50% US tariff on these materials.
Which Brazilian natural stone is exempt from the additional US tariff?
Only quartzite classified under HTSUS code 6802.99.00 is exempt from the additional 50% US tariff. Other materials, including granite, marble, and soapstone, are subject to the duty surcharge.
What was the total value of Brazilian stone exports from January to October 2025?
Total Brazilian natural stone exports reached USD 1.24 billion during the January–October 2025 period. This represents a 20.3% increase compared to the same ten-month period in 2024.
Sources
- Centrorochas (Brazilian Natural Stone Association), reported by StoneNews.eu — "Natural stone sector grows despite U.S. tariffs, but declines in granite and marble exports raise concerns" — StoneNews.eu