Natural Ruby Dust
Ultrafine dust from natural rubies, with 90%+ passing 0.5mm mesh, used in precision lapping and optical polishing. Falls under HTS 7105.90.00.00 as 'other' dust/powder of natural semi-precious stones.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If from natural diamonds
Diamond dust/powder has specific subheading 7105.10, separate from other stones.
If worked into jewelry components
Articles of worked precious/semi-precious stones classify under heading 7116.
If not sufficiently fine (under 90% through 0.5mm)
Coarser natural corundum powder may fall under Chapter 25 as non-precious stone dust.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Include sieve analysis report proving powder form compliance
• Document natural corundum origin to distinguish from synthetic ruby powder
Related Products under HTS 7105.90.00.00
Tourmaline Abrasive Powder
Natural tourmaline dust for specialty polishing of hardened steels and ceramics. HTS 7105.90.00.00 covers other natural semi-precious stone powders.
Synthetic Opal Powder
Lab-created silica-based opal powder for iridescent coatings and polishing. Classified under 7105.90.00.00 as synthetic semi-precious stone powder.
Peridot Dust
Natural olivine (peridot) powder for olivine sandblasting alternatives. Meets 7105.90.00.00 for natural semi-precious stone dust.
Aquamarine Grinding Powder
Natural beryl (aquamarine) powder for high-end lapidary and optics work. HTS 7105.90.00.00 for other natural semi-precious stone powders.
YAG Laser Powder
Yttrium aluminum garnet (YAG) synthetic powder precursor for laser crystals. Classified under 7105.90.00.00 as synthetic precious stone powder for optical applications.
Synthetic Diamond Powder
Fine synthetic diamond powder where 90% or more passes through a 0.5 mm sieve, used for industrial grinding and polishing applications. Classified under HTS 7105.90.00.00 as powder of synthetic precious stones (diamonds). Meets subheading note definition for 'powder form'.