Digital Refractometer & Gem Tester, Refractive Index 1.300-3.000, LCD Display, 700mAh Battery, ±0.005 Accuracy, Ideal for Diamonds, Jewelry, Jade & Crystals

Discover the Ultimate Tool for Gemstone Enthusiasts: Our Portable Digital Refractometer is designed for jewelers, hobbyists, and collectors who seek professional-grade gem identification on the go. This innovative device brings the precision of lab analysis right to your fingertips, making it easier than ever to distinguish between various gem species and verify authenticity. No More Messy Oils: Our refractometer eliminates the need for messy refractive oils. With a simple placement of your gemstone or solid sample on the measurement platform, you can achieve quick, clean, and contactless readings, enhancing your gem identification experience. Unmatched Accuracy: Equipped with a high-precision sensor, our refractometer measures a refractive index range of 1.300 to 3.000, delivering an impressive accuracy of ±0.001 and a minimal error margin of ±0.005. This level of precision is essential for any serious gemologist or collector. Lightweight and Durable: Weighing only 250g, this portable refractometer is crafted from a rugged aluminum alloy, ensuring durability while remaining lightweight for easy transport. The bright backlit LCD display guarantees clear visibility in any environment, whether you’re at a gem show or working in your shop. Long-Lasting Performance: Powered by a 700mAh battery, our device offers approximately 200 measurements per charge, making it an ideal choice for extended use during field trips or gem exhibitions. Complete Gem Identification Kit: This comprehensive package includes everything you need to get started: the refractometer, an aluminum carrying case, tweezers, a cleaning cloth, a countertop cover, calibration blocks (1.487 & 1.806), and an English manual. Technical Specs: - Dimensions: 135.0 x 78.0 x 24.0 mm - Weight: 250g - Measurement Range: 1.300 ~ 3.000 - Accuracy: ±0.001 - Measurement Error: ±0.005 - Battery Capacity: 700mAh Lithium Battery - Approx. Measurements per Charge: ~200 For best results, always calibrate your ...

• Discover the essential **Gem Refractometer** designed for precise measurement of the refractive index, a key optical characteristic of gemstones. With a high-precision sensor, it utilizes total internal reflection principles to deliver reliable insights for gem identification. Ideal for gemologists and enthusiasts, this tool aids in distinguishing gemstone types and assessing their physical properties effectively.
• Discover the Compact Jewelry Refractometer, expertly designed for durability and ease of use. Weighing just 250 grams, its High-Strength Aluminum Alloy Shell ensures Scratch and Corrosion Resistance. Featuring an LCD Backlit Display and ABS Insulated Switches, this tool offers Comfortable Viewing and Built-In Triple Insulation Protection, making it a reliable choice for gemstone analysis.
• 【Wide Application】Ideal for measuring the Refractive Index of Gemstones and various Solid Materials, this tool accurately identifies Single Crystal and 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, or Rough Stones under 2.0mm².
• 【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.