Raw Carbonado Diamond from Canada
Carbonado diamonds are polycrystalline, non-crystalline aggregates of diamond primarily used in industrial applications due to their extreme toughness and resistance to fracturing. Classified under HTS 7102.29.00.10 as miners' diamonds specifically carbonados, they are unworked or roughly shaped for mining and drilling tools. Their black, porous appearance distinguishes them from gem-quality diamonds.
Duty Rate — Canada → United States
Rate breakdown
Import Tips
• Verify authenticity through gemological certification to confirm carbonado structure and avoid misclassification as synthetic diamonds under 7104
• Provide mining origin documentation as carbonados are natural 'miners' diamonds' excluding lab-grown polycrystalline diamonds
• Ensure proper declaration of weight in carats; carbonados often sold in bulk for industrial processing