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HS Code for Industrial synthetic diamonds
Author: Ivy Tse
Published:
Updated:

HS Code for Industrial Synthetic Diamonds

TL;DR: The **HS code for industrial synthetic diamonds** is 7104.21 in 2025, stable under WCO Chapter 71 despite regional tariff changes like GCC 12-digit codes and US HTS mandates—essential for customs compliance and e-commerce shipping.

What is the HS Code for Industrial Synthetic Diamonds?

Industrial synthetic diamonds fall under HS code 7104.21. This classification covers unworked or roughly shaped lab-grown diamonds used in manufacturing.

  • HS Chapter 71: Precious stones and metals
  • HS Heading 7104: Synthetic or reconstructed precious stones
  • HS Subheading 7104.21: Specifically synthetic diamonds, unworked
  • Excludes powders (7105.10) and worked forms
  • Stable in 2025 WCO nomenclature

Accurate HS code use prevents customs delays in global trade.

HS Code 7104.21 Breakdown for Synthetic Diamonds

HS 7104.21 precisely defines synthetic diamonds classification. Understand the structure for tariff compliance 2025.

HS LevelCodeDescription2025 Status
Chapter71Precious stones, metalsUnchanged
Heading7104Synthetic precious stonesStable
Subheading7104.21Synthetic diamonds, unworkedNo WCO revision
Related7105.10Diamond powderSeparate category

Source: WCO HS 2022 nomenclature (valid through 2026).

Industrial Applications of Synthetic Diamonds HS 7104.21

Synthetic diamonds under HS 7104.21 power key industries. Their durability drives high-volume shipments.

  • Cutting tools and drill bits
  • Abrasives for metal polishing
  • Heat spreaders in electronics
  • High-pressure anvils
  • Semiconductor manufacturing

Global demand surges 15% annually per 2025 industry reports.

2025 Regional HS Code Updates Affecting HS 7104.21 Shipments

Regional changes impact HS code declarations for synthetic diamonds. No global WCO shift until 2027, but national updates apply.

  • US: Mandatory 10-digit HTS for USPS (Sep 1, 2025)
  • GCC: 12-digit HS codes (Jan 1, 2025: Kuwait, Oman, Qatar, Saudi Arabia)
  • EU: Combined Nomenclature 2025 minor Chapter 71 tweaks
  • US de minimis ends Aug 29, 2025—full HS required
  • China: Enhanced tariff verification for Chapter 71

How to Find and Verify HS Code for Synthetic Diamonds

Follow this step-by-step process for accurate classification.

  1. Identify if unworked synthetic diamond (7104.21)
  2. Check product specs: size, shape, purity
  3. Review destination country's extensions (HTS/CN)
  4. Use official tools: WCO database, USITC HTS search
  5. Document ruling for repeated shipments

Verification ensures duty optimization and compliance.

Common Classification Errors for HS 7104.21

Misclassification risks penalties and delays. Avoid these pitfalls with HS code knowledge.

  • Confusing synthetic with natural diamonds (7102)
  • Worked diamonds under 7104.90
  • Powder/dust as 7105.10—not 7104.21
  • Ignoring regional digit extensions
  • Missing 2025 e-commerce mandates

HS 7104.21 Tariff Rates by Major Markets 2025

Tariff rates vary; check for synthetic diamonds shipments.

MarketHS 7104.21 Duty Rate2025 Notes
USA0–4.2%HTS mandatory
EU0–2.5%CN 2025 applies
China0–3%Preferential for industrial use
GCC0–5%12-digit from Jan 2025
AustraliaDuty-freeFTA benefits

Rates per WTO bindings; verify locally.

FAQ: HS Code for Industrial Synthetic Diamonds

Quick answers on synthetic diamonds classification 2025.

What is the exact HS code for industrial synthetic diamonds?

HS 7104.21 covers unworked synthetic diamonds for industrial use in 2025.

Is HS 7104.21 changed in 2025 WCO updates?

No, Chapter 71 synthetic diamonds remain stable until 2027 revision.

How does GCC 12-digit HS affect 7104.21 shipments?

GCC countries add two digits from Jan 1, 2025 for precise tariff application.

What HS code for synthetic diamond powder?

Diamond powder uses HS 7105.10, distinct from unworked 7104.21.

Does US de minimis change impact HS 7104.21?

Yes, ending Aug 29, 2025 requires full HS declaration for all imports.

Where to verify HS 7104.21 for my country?

Use national customs portals like USITC HTS or EU TARIC alongside WCO.

Are lab-grown gem diamonds also HS 7104.21?

Gem-quality may shift to worked categories; industrial stays 7104.21.

What if my synthetic diamonds are processed?

Processed forms fall under 7104.90 or tool headings, not 7104.21.

How often do HS codes for diamonds update?

WCO revises every 5 years; 2025 focuses on regional extensions.

Resources for HS Code Compliance

For shipments involving HS 7104.21 synthetic diamonds, consider expert tools. Book a Demo or contact: HKG +852 24671689 | CHN +86 4008751689 | USA +1 337 361 2833 | Email enquiry@freightamigo.com.

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