Gemstone Refractometer with LCD Screen, Jewelry Tester for Diamonds, Jade, Refractive Index 1.300-3.000

Here’s the optimized text while adhering to your requirements: --- Are you still concerned about struggling to quickly differentiate real diamonds from imitations, risking your professional credibility? The Beachtiful gemstone refractometer instantly verifies diamond authenticity by measuring refractive index—a definitive physical property—empowering professionals with reliable results. **Advantages** 1. No messy refractive oils needed! Place your gem or solid sample on the platform for a fast, clean, and contactless reading. 2. High-precision sensor delivers measurements from 1.300 to 3.000 with ±0.001 accuracy and only ±0.005 margin of error. 3. Lightweight yet durable high-strength aluminum alloy (250g / 0.55 lbs) resists scratches, corrosion, and field conditions. The bright backlit LCD ensures clarity in any environment. 4. Long-lasting efficiency: 700mAh battery supports ~200 measurements per charge. 5. Ready to use: Includes 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: 1.300 ~ 3.000 RI Accuracy: ±0.001 Error Margin: ±0.005 Battery: 700mAh (~200 measurements/charge) **Notes** For best results, calibrate with the included blocks (1.487 & 1.806) before each use. **Support** We prioritize your experience. For inquiries, email us for assistance within 24 hours. --- (Word count: ~300; sensitive terms avoided.)

• Gem Refractometer with High Precision Sensor Measures Refractive Index Based on Total Internal Reflection Principle for Reliable Gem Identification
• Precise Gemstone Refractometer, Measures Refractive Index From 1.300 To 3.000 With High Accuracy Up To ±0.005, Non-Destructive Testing For Jewelry Identification, Built-In High-Precision Sensor For Quick Quantitative Results
• Easy To Use Gem Refractometer With 1.487 And 1.806 Calibration Blocks, No Need Refractive Oil, Measure By Placing Sample Close To Platform, Identify Uniaxial Or Biaxial Gemstones
• Portable Jewelry Refractometer with LCD Backlit Display, High-Strength Aluminum Alloy Shell, Scratch-Resistant and Corrosion-Resistant, Weighs Only 250g, Built-In Triple Insulation Protection
• Gemstone Refractometer For Single Crystal, Twin Crystal, Diamond And Colored Gemstones, Accurately Measure Refractive Index Of Various Solid Materials, Widely Used In Jewelry Appraisal, Gem Processing And Collecting