Jiayiyoux Gemstone Refractometer, Professional Digital Jewelry Tester for All Stones, Measures Refractive Index 1.300–3.000, with LCD Backlit Screen & Case

Jiayiyoux Gemstone Refractometer, Professional Digital Jewelry Tester for All Stones, Measures Refractive Index 1.300–3.000, with LCD Backlit Screen & Case

• ▶[Gemstone Identification Tool]The gemstone refractometer is composed of high-sensitivity sensors and LCD screens.No complex procedures required, it accurately reads gemstone optical data, performs non-destructive testing. Perfectly suited for gemstone enthusiasts and jewelry appraisal centers.
• ▶[Precise Measurement]This gem tester can measure the refractive index of gemstones non-destructively, quickly and with high precision. Its built-in high-precision sensor covers a measurement range of 1.300-3.000, the measurement error is as low as ±0.005, meeting the identification needs of most common gemstones.
• ▶[Test Method]No need to use refractive oil, just bring the sample close to the measuring platform to measure. Based on this parameter, you can tell whether the gemstone is uniaxial or biaxial. In addition, it is equipped with calibration blocks, which need to be calibrated before measurement to ensure the accuracy of the measurement results.
• ▶[Clear Visual Reading ]Featuring a large LCD screen with backlight illumination, a high-sensitivity sensor, and intelligent electronics, the device ensures excellent readability even in low-light conditions. Powered by a rechargeable 700mAh lithium battery, it supports up to 10,000 measurements per charge.
• ▶[Wide Application]Designed for measuring the refractive index of gemstones and various solid materials, Our portable refractometer can quickly and accurately identify single crystal gemstones, twin crystal gemstones, diamonds and various colored gemstones. A must-have for gemologists and serious collectors.