HTS code 2505.10.10.00 covers "Natural sands of all kinds, whether or not colored, other than metalbearing sands of chapter 26 › Silica sands and quartz sands › Sand containing by weight 95 percent or more of silica and not more than 0.6 percent of oxide of iron" under the US Harmonized Tariff Schedule. This is the official duty rate charged by US Customs when this product is imported into the United States, sourced directly from the U.S. International Trade Commission and refreshed daily.