Portable Gem Refractometer with LCD Display, Accurate 0.001 Measurement, 1.300-3.000 Refractive Index, 700mAh Battery, Ideal for Jewelry & Gemstone Testing

Unlock the world of gem identification with our Portable Digital Refractometer, an essential tool for jewelers, hobbyists, and collectors. This device allows you to accurately identify gemstones in seconds, combining professional-grade performance with user-friendly design. Designed to provide lab-level precision, it utilizes the principle of total internal reflection to measure the refractive index, a crucial property for distinguishing between gem species and verifying their authenticity. Experience the convenience of a no-oil setup—simply place your gem or solid sample on the measurement platform for quick, clean, and contactless readings. Crafted from lightweight yet durable aluminum alloy, this refractometer is built to withstand the rigors of fieldwork, weighing only 250g (0.55 lbs). Its bright backlit LCD display ensures clear visibility in any environment, making it a reliable companion for gem shows, field trips, or extended use within your shop. With a high-precision sensor that measures from 1.300 to 3.000 with an accuracy of ±0.001 and minimal error margin, you can trust in the reliability of every reading. The device is powered by a 700mAh lithium battery, delivering approximately 200 measurements per charge, so you're always ready for your next gem identification task. Our complete package includes everything you need for success: the refractometer, an aluminum carrying case, tweezers, a cleaning cloth, a countertop cover, calibration blocks (1.487 & 1.806), and an English manual. For optimal results, remember to calibrate your device before each use with the provided blocks. Whether you're a seasoned professional or just starting your gemology journey, this Portable Digital Refractometer is your go-to solution for accurate and efficient gemstone identification. Elevate your gem collection experience today!

• Discover the precision of our Gem Refractometer, designed to measure the Refractive Index of gemstones. Utilizing advanced total internal reflection technology, it delivers accurate readings essential for distinguishing gemstone types and assessing their properties. This tool offers reliable support for gem identification, making it a must-have for gemologists and enthusiasts alike.
• Discover Our Portable Jewelry Refractometer, Crafted with a Durable Aluminum Alloy Shell for Scratch and Corrosion Resistance. Weighing Just 250 Grams, It's Easy to Carry. The LCD Backlit Display and ABS Insulated Switches Enhance Usability, while Built-In Triple Insulation Protection Ensures Safe Operation. Experience Clarity and Comfort with Every Use!
• 【Wide Application】Ideal for measuring the Refractive Index of Gemstones and various Solid Materials, this tool quickly and accurately identifies Single Crystal Gemstones, Twin Crystal Gemstones, Diamonds, and Colored Gemstones. Perfect for Jewelry Appraisal Institutions, Gem Processing Factories, and Collectors. Note: Semi-finished products, poorly polished gemstones, and rough stones under 2.0mm² are not measurable.
• 【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.
• 【Wide Application】Designed for measuring the refractive index of gemstones and various solid materials, it can quickly and accurately identify single crystal gemstones, twin crystal gemstones, diamonds and various colored gemstones. It is widely used in jewelry appraisal institutions, gem processing factories, collectors and other scenarios. Note: Semi-finished products, poorly polished gemstones, gemstones less than 2.0mm² and rough stones cannot be measured.