Volcanic Sulfur Crystals from Canada
Bright yellow crystalline sulfur formed around fumaroles in active volcanoes like those in Indonesia or Japan. HTS 2503.00.00.90 covers this natural sulfur variety excluding sublimed or colloidal processing.
Duty Rate — Canada → United States
0%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Provide volcanic origin documentation; lab purity tests distinguish from synthetic crystals
• Avoid polished or sized crystals that resemble sublimed sulfur under exclusion
• Declare as loose crystals, not powdered, to stay in crude sulfur category