GB/T 16552-2003

GB/T 16552-2003 establishes the standardized naming rules and classification system for jewelry and jade materials, including natural gems, synthetic stones, and treated or imitation products. It is applied in the Chinese jewelry industry for product labeling, trade documentation, and quality inspection to ensure consistent terminology across manufacturing, retail, and certification laboratories. This standard is essential for preventing misrepresentation and facilitating clear communication between suppliers, consumers, and regulatory bodies.