Digital Refractometer for Jewelry, 700mAh with LCD Display, High Precision Refractive Index 1.300-3.000, Accurate Measurement 0.001 for Diamonds, Jade, Crystal

Discover the Ultimate Tool for Gem Identification: The Portable Digital Refractometer for Jewelers, Hobbyists, and Collectors. This innovative device makes it easy to accurately identify gemstones in just seconds, bringing professional-level gem identification into your hands. Understanding the refractive index is essential for distinguishing between different gem species and confirming authenticity, and our refractometer delivers precision through the principle of total internal reflection. Say goodbye to messy refractive oils! Our user-friendly design allows you to simply place your gem or solid sample on the measurement platform for a quick and clean reading. Experience lab-grade accuracy with a high-precision sensor that measures refractive indexes from 1.300 to 3.000, with an impressive accuracy of ±0.001 and a minimal error margin of ±0.005. Crafted from lightweight yet durable high-strength aluminum alloy, this refractometer is designed for portability and resilience, weighing only 250g (0.55 lbs). The bright backlit LCD display ensures that you can read measurements clearly, whether in the field or at a gem show. Powered by a robust 700mAh battery, you can enjoy approximately 200 measurements per charge, making it perfect for gem exhibitions, field trips, or extended use in your shop. Each 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 using the included calibration blocks before each session. Elevate your gem identification game and unlock the potential of your gemstone collection with this essential tool.

• Discover the essential **Gem Refractometer** for accurately measuring the refractive index of gemstones. This tool features a built-in high-precision sensor, utilizing total internal reflection to ensure reliable measurements. Perfect for gem identification, our refractometer helps distinguish gemstone types and assess their physical properties, providing valuable support for both enthusiasts and professionals.
• 【Compact and Durable】 This Portable Jewelry Refractometer weighs just 250 grams and features a High-Strength Aluminum Alloy Shell for Scratch and Corrosion Resistance. Its LCD Backlit Display ensures Clear Visibility, while ABS Insulated Switches and Built-in Triple Insulation Protection enhance Safety. Ideal for gem enthusiasts and professionals alike, this tool combines Functionality with Longevity.
• 【Versatile Use】Ideal for measuring the Refractive Index of Gemstones and various Solid Materials, this tool efficiently identifies Single Crystal Gemstones, Twin Crystal Gemstones, Diamonds, and Colored Gemstones. Perfect for Jewelry Appraisal Institutions, Gem Processing Factories, and Collectors. Note: Not suitable for Semi-Finished Products, Poorly Polished Gemstones, Gems under 2.0mm², or Rough Stones.
• 【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.