Digital Gemstone Refractometer, Jewelry Authenticity Tester, 1.300-3.000 RI Range, 700mAh Battery for 10000 Tests, Error ±0.005, Accuracy 0.001

The Professional Gemstone Identification Refractometer is designed with a high-precision optical system and offers a broad measurement range (RI 1.300–3.000) for the accurate identification of various gemstones, including diamonds, sapphires, rubies, emeralds, and more. This tool is essential for gemologists, jewelry designers, and gemstone enthusiasts alike.Key Features & Advantages:- Precision Measurement: Achieves accuracy up to ±0.005 with a minimum scale value of 0.001, providing dependable data for gem identification.- Large LCD Backlit Screen: Displays information clearly even in low-light conditions, making it easy to read and reducing eye strain.- Durable Aluminum Alloy Table: Constructed from hardened material to ensure long-lasting stability.- Insulation Switch: Made of robust ABS material for enhanced durability.- Long Battery Life: Features a built-in 700mAh lithium battery, capable of supporting up to 10,000 measurements, making it ideal for field gemology applications.Technical Specifications:- Measuring Range: Refractive Index 1.300–3.000- Error: ±0.005- Accuracy: 0.001- Battery Type: Lithium Battery (700mAh)- Battery Life: Approximately 10,000 tests- Product Dimensions: 13.5×7.8×2.4 cm- Net Weight: 0.8 kgWhat’s Included:- Gemstone Refractometer × 1- Protective Case × 1- User Manual × 1

• PROFESSIONAL GEMSTONE IDENTIFICATION TOOL: This advanced refractometer features a precision optical system combined with LED backlight technology, delivering accurate refractive index measurements from 1.300 to 3.000. With a remarkable accuracy of ±0.005 and a resolution of 0.001, it is ideal for jewelry professionals and gemology enthusiasts looking to quickly identify diamonds, sapphires, emeralds, and more.
• WORKING PRINCIPLE: Utilizing the principle of total internal reflection, this gemstone tester measures the refractive index, a crucial optical property for distinguishing various gemstones. This allows users to effectively identify and differentiate gem types based on their distinct optical characteristics.
• EASY AND CLEAN TESTING: Unlike conventional methods, this gem identification tool eliminates the need for refractive oil. Simply position the gemstone near the platform for immediate results. This streamlined process not only simplifies operations but also protects the integrity of fragile gems.
• CLEAR VISUAL READINGS & LONG BATTERY LIFE: The device features a large illuminated LCD screen, a high-sensitivity sensor, and intelligent electronics, ensuring excellent readability in low-light environments. With a rechargeable 700mAh lithium battery, it can handle up to 10,000 measurements per charge, making it perfect for laboratory work, field gemology, and jewelry store usage.
• WIDE COMPATIBILITY FOR VARIOUS GEMSTONES: This versatile jewelry calibration tool is capable of identifying both uniaxial and biaxial crystals swiftly and accurately. It effectively differentiates between single and double gemstones, including moissanite, diamond, colored gems, natural or synthetic stones, minerals, and other solid materials, making it an essential instrument for gemologists and serious collectors.