The reference shelf

Start with the
primary source.

Use official brand, government and gemological references to verify details that change or require specialist authority.

Hong Kong Customs: Intellectual Property Rights and Consumer Protection

Hong Kong guidance on counterfeit goods and consumer protection.

Official clearance information; requirements depend on the goods and circumstances.

Official information for travellers carrying temporary imports into Singapore.

Official import guidance; check current eligibility and permit requirements.

Official Japanese customs information for travellers.

Current collections, specifications, retailer and service information.

Example of official model-specific product specifications; regional configurations differ.

Gemological Institute of America explanation of diamond grading factors.

External links point to third-party sites. Policies, specifications and pages may change; consult the current source and its publication date.