GB/T 44910-2024 in English
VALIDAmber grading
- Issued on:2024-11-28
- Implemented on:2025-06-01
- File Format:PDF
- Delivery:Via email within 5 business days
$364.00
| Standard No: | GB/T 44910-2024 |
| Document status: | VALID |
| Title in English: | Amber grading |
| Title in Chinese: | 琥珀分级 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 5 business days |
| Issued on: | 2024-11-28 |
| Implemented on: | 2025-06-01 |
| ICS Classification: | 39.060-Jewellery |
| Chinese Classification: | D59-Other non-metal ore |
| Professional Classification: | GB-National Standard |
| Related Keywords: | amber clarity gradingthe influence
amber classification blood amber blue amber golden amber |
| Related Topics: | amber
Succinylation Succinylation rosedale Neighborhood Amber Amber Pearl |
《GB/T 44910-2024琥珀分级》由TC298（全国珠宝玉石标准化技术委员会）归口，主管部门为自然资源部（国土）。
Introduction
1. Background and significance of the standard
GB/T44910-2024 "Amber Classification" national standard is an important specification for my country's jewelry and jade industry. It mainly provides detailed regulations for the classification of natural polished amber (including golden amber, beeswax, blood amber, and blue amber). The formulation of this standard provides a unified technical basis for the quality assessment of amber, which helps to regulate market circulation and improve the technical level of the industry.
2. Comparison of grading frameworks
| Grading dimensions | Grading methods | Key indicators |
|---|---|---|
| Body color grading | Hue, lightness, chroma | H (hue), V (lightness), C (chroma)Munsell color system |
| Fluorescent color grading | Hue, intensity | Fluorescent color hue category, fluorescence relative intensity value (I) |
| Transparency grading | Observation characteristics | T1-T5 level, the clarity of observing objects through amber |
| Clarity Grading | The influence of internal and external characteristics | C1-C4 grades, the influence of defects visible to the naked eye |
3. Implementation Suggestions
3.1 Grading Environment Requirements
Grading should be carried out in a neutral color environment without direct sunlight, using D65 standard light source. Recommended configuration:
- D65 standard light box
- White or black background (selected according to the grading project)
- Professional colorimetric color card (Munsell color system)
- Fluorescence spectrophotometer (for fluorescence intensity measurement)
3.2 Key points of quality control
It is recommended to calibrate instruments and equipment regularly and provide professional training for graders. Establish a sample archive management system to record grading results and historical data.
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