Portable Digital Gemstone Refractometer Jewelry Professional Jewelry Tester for Gem Identification Diamond Tester Professional High Accuracy ±0.001 for Jewelry,Jade

Professional electronic refractometer for jewelry, quick refractive index measurement (1.300-3.000) with 0.001 accuracy, no refractive oil required. Features a large backlit screen for clear readings, thousands of recharges, and a portable aluminum alloy body. Accurately identifies various gemstones, moissanite, and diamonds, making it an essential tool for gem identification and collection.Product Features:1. Large backlit LCD screen for comfortable viewing and clear, bright display.2. Aluminum alloy worktable, made of durable, scratch-resistant aluminum alloy.3. ABS power switch with ABS insulation to effectively prevent electrical leakage.4. Say goodbye to greasy refractive oil! Simply place the gemstone or solid sample on the measuring platform for quick, clean, and non-contact readings.Specifications:Product Name: Digital Gem RefractometerMeasurement Range: Refractive Index 1.300-3.000Measurement Error: ±0.005Measurement Accuracy: 0.001Number of Cycles: 10,000Dimensions: 13.5 x 7.8 x 2.4 cmProduct Includes:1 * Gem Refractometer1 * Calibration Block (1 * 1.487, 1 * 1.806)Customer Service:If you have any questions about the product, please email us promptly, and we will reply to your questions as soon as possible.

• 【JEWELRY IDENTIFICATION TOOL】: Gemstone identification instruments Composed of a high-sensitivity sensor and LCD screen, this tool enables non-destructive, rapid, and accurate measurement of gemstone refractive index, determining other optical properties. Refractive index range: 1.300-3.000, measurement accuracy up to 0.001, measurement error: ±0.005
• 【CLEAR VISUAL READING】: Digital gemstone refractometer For Jewelry Equipped with a large backlit LCD screen, high-sensitivity sensor, and intelligent electronics, ensuring clear readings even in low-light conditions. Each charge supports up to 10,000 measurements, suitable for various applications including laboratory, field gem identification, and jewelry stores
• 【TESTING METHOD】: Portable Gem Refractometer Jewelry No refractive oil required; simply place the sample measurement close to the measuring platform. Based on this parameter, you can determine whether the gemstone is a uniaxial or biaxial crystal. Two calibration blocks with refractive indices of 1.487 and 1.806 are also included, calibrated before measurement to ensure accuracy
• 【OPTICAL MEASUREMENT PRINCIPLE】: Diamond Tester Professional Utilizing the principle of total internal reflection, the critical refractive index of a gemstone is determined. This is a fundamental optical property for accurately identifying and characterizing gemstones, providing a scientific basis. Its compact and lightweight design ensures easy portability. The aluminum alloy casing extends its lifespan
• 【COMPATIBLE WITH MULTIPLE GEMSTONES】: Gemstone Measuring Instrument Capable of quickly and accurately identifying single-crystal and twinned gemstones, including moissanite, diamonds, colored gemstones, natural or synthetic gemstones, minerals, and other solid materials. Specifically designed for measuring the refractive index of gemstones and solid materials