71042100

HS code 7104.21.00.00 (Chapter 71 "Pearls, precious stones, metals"; Heading 7104 "Synthetic or reconstructed precious or semiprecious stones, whether or not worked or graded but not strung, mounted or set; ungraded synthetic or reconstructed precious or semi-precious stones, temporarily strung for convenience of transport"; Subheading 710421 "- - Diamonds") under the United States tariff schedule classifies "Diamonds". United States customs apply MFN rate of 3%, Column 2 rate 30%. Statutory unit of measure: g. 17 free trade agreement preferential rates are available for this code.