U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 28, 2025
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All TitlesTitle 31Chapter VPart 592Subpart C - Subpart C—General Definitions
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The term rough diamond means any diamond that is unworked or simply sawn, cleaved, or bruted and classifiable under subheading 7102.10, 7102.21, or 7102.31 of the Harmonized Tariff Schedule of the United States.
