Digital Refractometer for Gemstones, Lab-Grade Precision Tool with 0.001 Scale, ±0.005 Error, Large LCD Backlight

**Optimized Text:** This Professional Gemstone Identification refractometer features a precision optical system and an extensive measurement range (RI 1.300–3.000), enabling precise identification of gemstones like diamonds, sapphires, rubies, emeralds, and others. Ideal for gemologists, jewelry designers, and enthusiasts. **Key Features & Advantages:** - **Precision Measurement:** Accuracy of ±0.005 with a minimum scale value of 0.001, delivering dependable data for gem analysis. - **Large LCD Backlit Screen:** Ensures clear visibility in low-light conditions, reducing eye strain. - **Durable Aluminum Alloy Table:** Hardened construction guarantees long-term durability. - **Insulation Switch:** Crafted from ABS material. - **Extended Battery Life:** Equipped with a 700mAh lithium battery, supporting up to 10,000 measurements—ideal for fieldwork. **Technical Specifications:** - Measuring Range: Refractive Index 1.300–3.000 - Error: ±0.005 - Accuracy: 0.001 - Battery Type: Lithium Battery (700mAh) - Battery Life: ~10,000 tests - Dimensions: 13.5×7.8×2.4 cm - Net Weight: 0.8 kg **Included Items:** - Gemstone Refractometer × 1 - Protective Case × 1 - User Manual × 1

• Professional Gemstone Refractometer with Precision Optical System, LED Backlight, 1.300-3.000 Range, ±0.005 Accuracy, for Jewelry and Gemology Identification of Diamonds, Sapphires, Emeralds
• 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 Preserving Delicate Gem Integrity.
• Clear Visual Reading with Large Backlit LCD Screen, High-Sensitivity Sensor for Low-Light Conditions, Rechargeable 700mAh Battery Supports 10000 Measurements, Ideal for Lab, Field Gemology, Jewelry Store Use
• Wide Compatibility for Various Gemstones, Suitable for Uniaxial and Biaxial Crystals, Quickly and Accurately Identifies Single and Double Gemstones Including Moissanite, Diamond, Colored Gems, Natural or Synthetic Stones, Minerals and Other Solid Materials, Must-Have for Gemologists and Collectors