Portable Gem Refractometer, Jewelry Tester Identification Tools, with 1.0-3.0 Refractive Index Reading Range, Auto Calibration, for Jewelry, Gold ＆ Silver and Diamond, Lab Refractometers

Product specifications: - Distinguish diamonds, moissanite and other gemstones in seconds - Refractive index reading range is around 1.000 to 3.000 - Continuous detection without waiting - USB power supply socket, compatible with international voltage standards - Low battery indicator; automatic power off Product name: Gem Refractometer Measuring range: 1.0-3.0 Machine size: about 140*80*50mm Net weight: about 1029 Including packaging weight: about 3309 Packaging box size: about 150*105.70mm Packaging includes: Host*1

• PROFESSIONAL GEM REFRACTOMETER: Detects the quality (intensity) of light reflected from the surface of cut and polished gemstones. This intensity reading is fed into a microcontroller where it is calculated and converted to obtain the refractive index reading of the gemstone
• FAST IDENTIFICATION: Quickly and accurately identify single and double gemstones. Measuring range 1.0-3.0. Helps identify diamonds, moissanite and colored gemstones, speeds up the identification of gemstones in packaging and enables fast work
• AUTO CALIBRATION: The perfect tool for quickly and accurately testing the purity and authenticity of precious metals. It gives you instant results without waiting between tests, so you can easily and quickly evaluate your projects anytime, anywhere
• LONG SERVICE LIFE: USB fast charging supports use at any time. Continue to eliminate possible gemstones by R.I., color, hardness and SG values. After testing, transparent gemstones have polished and flat surfaces, which are perfect for separating gemstones
• SCOPE OF APPLICATION: The refractometer can quickly and accurately identify a variety of single and double gemstones, jade, and jade bracelets. It provides high accuracy, compactness, portability and ease of use for critical gem identification