HS Code 7104

Synthetic Precious Stones

HS code 7104 covers synthetic or reconstructed precious and semi-precious stones that are lab-grown but not yet permanently mounted or set in jewellery.

4-digit Section XIVAir

HS Code 7104 — Synthetic Precious Stones

This code covers lab-grown or synthetic versions of precious and semi-precious stones. These have the same chemical and physical properties as natural stones but are created in industrial environments. It also covers reconstructed stones made from dust or fragments.

What's included

  • Lab-grown diamonds
  • Synthetic rubies
  • Cubic zirconia
  • Reconstructed turquoise

What's excluded

  • Glass imitation gems → use 7018 (Simple glass imitations that do not share the chemical properties of gems are glass articles.)

Common examples

  • Loose lab-grown round diamond
  • Synthetic sapphire wafers
  • Loose cubic zirconia stones
  • Synthetic emerald rough

Frequently asked questions

How are lab diamonds distinguished from natural ones?

They often require specialized laboratory testing, and for customs billing, they must be declared under 7104 rather than 7102.

Trade & shipping notes

  • Typical duty range: 0% - 6%
  • Documentation: Invoices should clearly state 'Synthetic' or 'Lab-Grown' to avoid diamond fraud penalties.
  • Typical shipping mode: Air
  • Top exporters: China, India, USA
  • Top importers: USA, Belgium, United Arab Emirates

Key takeaway

Lab-grown gemstones must be strictly separated from natural ones for customs and valuation purposes.

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