Professional Digital Gemstone Refractometer, Measures Refractive Index 1.300–3.000 for All Stones, Portable with LCD Backlit Screen & Case

Professional Digital Gemstone Refractometer, Measures Refractive Index 1.300–3.000 for All Stones, Portable with LCD Backlit Screen & Case

• Professional Gemstone Refractometer with Precision Optics, LED Backlight, 1.300-3.000 RI Range, ±0.005 Accuracy for Diamond, Sapphire, Emerald Identification
• Gemstone Tester Measures Refractive Index Based on Total Internal Reflection Principle, Accurately Identifying Gem Types Through Unique Optical Properties
• Easy and Clean Testing, This Gem Identification Instrument Requires No Refractive Oil, Simply Place the Sample Close to the Platform for Instant Results, Simplifying Work While Maintaining Delicate Gem Integrity.
• Large LCD Screen with Backlight for Clear Visual Reading, High-Sensitivity Sensor for Accurate Measurements, Rechargeable 700mAh Battery Supports 10000 Tests, Ideal for Lab, Field Gemology, and Jewelry Store Use
• Wide Compatibility for Uniaxial and Biaxial Crystals, Quickly Identifies Single and Double Gemstones Including Moissanite, Diamond, Colored Gems, Natural or Synthetic Stones, Minerals and Solid Materials, Essential Tool for Gemologists and Collectors