Key Features
- Accurate and reliable gemstone testing using thermal conductivity measurement
- LED indicator light for clear test results
- Compact and portable design for on-the-go use
- Multi-functional: suitable for testing diamonds, jade, and other gemstones
- Simple operation: just touch the test pen to the gemstone for instant results
Specifications
| Color | Black |
| Power Supply | 1 x 9V DC battery (not included) |
| Item Size | 13.3 x 4.1 x 2 cm (5.2 x 1.6 x 0.7 inches) |
Maintenance and Repair
- Handle the probe with care to maintain sensitivity
- Replace the battery when the indicator light dims
- Remove the battery when not in use for extended periods
- Calibrate the instrument annually for accurate detection
Operating Conditions
- Temperature range: 5-35°C
- Relative humidity: up to 80%
- Ensure gemstones are clean, dry, and at room temperature before testing
What’s Included
- 1 x Diamond Hardness Tester




