SN/T 5677-2024 in English
VALIDDetermination of high-value mineral products such as gemstones by Micro-Laser Raman Spectroscopy
- Issued on:2024-12-31
- Implemented on:2025-07-01
- File Format:PDF
- Delivery:Via email within 5 business days
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| Standard No: | SN/T 5677-2024 |
| Document status: | VALID |
| Title in English: | Determination of high-value mineral products such as gemstones by Micro-Laser Raman Spectroscopy |
| Title in Chinese: | 宝玉石类高值矿产品鉴定 显微激光拉曼光谱法 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 5 business days |
| Issued on: | 2024-12-31 |
| Implemented on: | 2025-07-01 |
| ICS Classification: | 39.060-Jewellery |
| Chinese Classification: | D59-Other non-metal ore |
| Professional Classification: | SN-Import&Export Inspection |
| Related Keywords: | microscopic laser raman spectroscopy technology
micro-laser raman spectroscopy introduction interpretation benchmark raman spectra gemstones comparison organic gemstones |
Introduction
Interpretation of the core content of the standard
This standard systematically standardizes the application system of microscopic laser Raman spectroscopy technology in the identification of gemstones, mainly including:
- Technical principle: Non-destructive detection based on molecular vibration spectrum
- Instrument requirements: Laser wavelength (244-1064nm), resolution, calibration specifications
- Test process: Sample preparation → Instrument calibration → Parameter setting → Data acquisition → Result analysis
- Typical spectrum library: Appendix A contains benchmark Raman spectra of 200+ kinds of gemstones
Comparison of key technical parameters
| Test items | Recommended parameters | Allowed range |
|---|---|---|
| Laser power | 1-5mW | 0.1-50mW |
| Spectral range | 50-4000cm-1 | Ultraviolet region≥200cm-1 |
| Resolution | ≤4cm-1 | ≤8cm-1 |
Typical application case
Diamond identification characteristics
The standard clearly states that diamond has a characteristic peak at 1331cm-1 (Figure A.1), which is significantly different from cubic zirconia (618cm-1).
Analysis of Jade Components
The combination of characteristic peaks of jadeite (Figure A.158) and sodium chrome pyroxene (Figure A.162) can accurately distinguish A/B/C goods.
Implementation Suggestions
- Establish a laboratory environment control system (temperature 20-26℃, humidity ≤65%)
- Regularly use single crystal silicon wafers to calibrate instruments (520.7cm-1 benchmark)
- Use low-power testing (≤1mW) for organic gemstones (amber, pearl, etc.)
- Combined with GB/T 16553 and other standards for comprehensive judgment
Sample only — not a preview of SN/T 5677-2024
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