Blue HPHT Synthetic Diamonds Melee from Japan
Tiny blue synthetic diamonds (0.8-1.2mm) created via HPHT with boron doping for color. HTS 7104.91.5000 for synthetic diamond melee, worked but loose. Used in micro-pave jewelry designs.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Spectral analysis certificates prove color doping method for customs
• Separate blue from colorless parcels to prevent averaging valuation errors