CelyToe Gem Refractometer, Digital Jewelry Tester Identification Tool with ±0.005 Error & 0.001 Accuracy, LCD Backlit Screen for Ruby Sapphire Jadeite Testing

CelyToe

【Precise Measurement】:This refractometer built-in high-precision sensor covers a measurement range of 1.300-3.000, meeting the identification needs of most common gemstones and providing quantitative data to support identification results. The measurement error is as low as ±0.005. 【Wide Range of Applications】: This digital refractometer can quickly and accurately identify single and double gemstones, diamond colored gemstones, designed for measuring the refractive index of gemstones and solid materials. 【Easy to Use】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 two calibration blocks of 1.487 and 1.806, which need to be calibrated before measurement to ensure the accuracy of the measurement results. 【Excellent Design】The portable design makes the jewelry refractometer compact and lightweight, weighing only 250 g. And it adopts hard aluminum alloy to create a work surfaces, which is scratch-resistant and sturdy, providing stable support for precision testing. In addition, it is equipped with an LCD backlit display and ABS insulated switches, with built-in triple insulation protection, ensuring clear and bright viewing comfort while ensuring safe use. 【Working Principle】: The working principle of the refractometer is based on total internal reflection. The refractive index is a very important optical parameter,this key characteristic allows users to accurately identify and differentiate gem types based on their unique optical properties.