Portable Jewelry Refractometer, Professional Gemstone Identification Tool for Measuring Refractive Index 1.300-3.000, Lightweight Design

Are you still concerned about quickly distinguishing genuine diamonds from imitations, without compromising your professional credibility? The Beachtiful gemstone refractometer uses precise refractive index measurements—an undeniable physical property—to instantly verify diamond authenticity, empowering professionals with reliable results. **Advantages** 1. No messy refractive oils needed! Simply place your gem or solid sample on the measurement platform for a fast, clean, and contactless reading. 2. Equipped with a high-precision sensor, it measures refractive indices from 1.300 to 3.000 with an accuracy of ±0.001 and a margin of error of just ±0.005. 3. Built from lightweight yet durable high-strength aluminum alloy (only 250g / 0.55 lbs), it resists scratches, corrosion, and field conditions. The bright backlit LCD ensures clear readings in any environment. 4. Long-lasting & efficient: A 700mAh battery supports around 200 measurements per charge. 5. Ready to use: Includes the refractometer, aluminum case, tweezers, countertop cover, calibration blocks (1.487 & 1.806), and English manual. **Specifications** Size: 135 x 78 x 24 mm (5.31" x 3.07" x 0.94") Weight: 250g (0.55 lbs) Measurement Range: Refractive Index 1.300 ~ 3.000 Accuracy: ±0.001 Measurement Error: ±0.005 Battery Capacity: 700mAh Approx. Measurements per Charge: ~200 **Notes** For best results, calibrate the device using the included blocks (1.487 & 1.806) before each use. If you have any questions, feel free to reach out—we’re here to assist promptly.

• Gem Refractometer with High Precision Sensor Measures Refractive Index Based on Total Internal Reflection Principle for Reliable Gem Identification
• Precise Gemstone Refractometer with High Accuracy, Measures Refractive Index from 1.300 to 3.000, Error as Low as ±0.005, Non-Destructive Testing for Jewelry Identification
• Easy to use gem refractometer, no refractive oil needed, just place sample close to measure. Determines uniaxial or biaxial gems, includes 1.487 and 1.806 calibration blocks for accurate results.
• Portable Jewelry Refractometer with LCD Backlit Display, High-Strength Aluminum Alloy Shell, Scratch-Resistant and Corrosion-Resistant, Only 250g Weight, Built-In Triple Insulation Protection
• Wide Application Refractometer For Gemstones And Solid Materials, Quickly Identify Single Crystal, Twin Crystal, Diamonds And Colored Gemstones, Used In Jewelry Appraisal, Gem Processing And Collecting