Miners' Type Ia Natural Diamond Rough from Mexico
Rough natural diamonds classified as miners' diamonds, unworked except for simple sawing or cleaving, primarily Type Ia with nitrogen impurities. These fall under HTS 7102.21.10.20 as industrial-use diamonds not mounted or set, distinguished from gem-quality by color and clarity for mining applications. Used in drill bits for oil and gas extraction.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Obtain Kimberley Process Certificate for all rough diamonds to verify conflict-free origin and avoid customs holds
• Provide detailed grading reports specifying industrial quality (e.g
• Type Ia, low clarity) to confirm classification under 7102.21.10.20
• Declare exact weight in carats; misdeclaration of miners' vs gem diamonds can lead to reclassification and penalties