Overview
Enviro Testers Digital GEM & Glass Refractometer is for measuring the gem refractive index of an unknown gem stones, covering full range from 1.400 to 3.000. It gives a quick and reliable differentiation of diamonds and imitations colored stones from their many imitations.
Main Parameters
| Parameter | Specification |
| Measuring Range | Refractive Index: 1.300 – 3.000 |
| Resolution | 0.001 |
| Measurement Accuracy | ±0.005 |
| Dimensions | 5.3 in × 3.1 in × 0.9 in (13.5 cm × 7.8 cm × 2.4 cm) |
| Weight | 0.55 lb (0.25 kg) |
| Power Supply | 700 mA Lithium Battery |
| Battery Life | 10,000 Uses |
| Accessory |
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