Professional Gemstone Refractometer - Digital Jewelry Tester with 1.300-3.000 Refractive Index, Accurate Calibration for Sapphire, Diamond, Ruby, and Precious Stones

Discover the ultimate tool for gemstone enthusiasts and professionals with our Professional Gemstone Identification Refractometer. Designed for gemologists, jewelry designers, and hobbyists, this refractometer simplifies the process of accurately identifying a wide range of gemstones, including diamonds, sapphires, rubies, and emeralds. **Key Features & Advantages:** - **Precision Measurement:** With an accuracy of ±0.005 and a minimum scale value of 0.001, this refractometer provides reliable data, ensuring precise identification of your gemstones. - **Large LCD Backlit Screen:** The clear display allows for easy reading, even in dim lighting, helping to reduce eye strain during prolonged use. - **Durable Aluminum Alloy Table:** Crafted from hardened aluminum, this refractometer is built for stability and long-lasting performance, making it perfect for both fieldwork and laboratory use. - **Insulation Switch:** Made from high-quality ABS material, the insulation switch enhances safety while handling the device. - **Long Battery Life:** Featuring a built-in 700mAh lithium battery, this refractometer supports up to 10,000 measurements, making it an ideal choice for extensive 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: Approx. 10,000 tests - Product Dimensions: 13.5×7.8×2.4 cm - Net Weight: 0.8 kg **What’s Included:** - Gemstone Refractometer × 1 - Protective Case × 1 - User Manual × 1 Whether you're a seasoned gemologist or a budding jewelry designer, this Professional Gemstone Identification Refractometer is a valuable addition to your toolkit, enhancing your ability to evaluate and appreciate the beauty of gemstones.

• Professional Gemstone Identification Tool - This high-quality Refractometer features a precision optical system and LED backlight technology, delivering reliable refractive index measurements from 1.300 to 3.000. With an accuracy of ±0.005 and resolution of 0.001, it's ideal for Jewelry Professionals and Gemology Enthusiasts to effectively identify Diamonds, Sapphires, Emeralds, and more.
• Discover the Science Behind Gemstone Testing! Our Gemstone Tester utilizes Total Internal Reflection to measure the Refractive Index, a crucial optical parameter for identifying various Gem Types. With this reliable tool, you can differentiate gemstones based on their unique optical properties, making it an essential addition for Gem Enthusiasts and Professionals alike.
• Wide Compatibility for Various Gemstones - This Jewelry Calibration Test Tool is designed for both Uniaxial and Biaxial Crystals. It efficiently identifies Single and Double Gemstones, including Moissanite, Diamond, Colored Gems, Natural and Synthetic Stones, Minerals, and other Solid Materials. An essential tool for Gemologists and serious Collectors alike.
• CLEAR VISUAL READING & EXTENDED BATTERY LIFE -- Featuring a large LCD screen with backlight illumination, a high-sensitivity sensor, and ligent electronics, the device ensures excellent readability even in low-light conditions. Powered by a rechargeable 700mAh lithium battery, it supports up to 10,000 measurements per charge, making it suitable for lab use, field gemology trips, and jewelry store applications.
• WIDE COMPATIBILITY FOR VARIOUS GEMSTONES -- Suitable for both uniaxial and biaxial crystals, this jewelry calibration test tools quickly and accurately identifies single and double gemstones—including moissanite, diamond, colored gems, natural or synthetic stones, minerals, and other solid materials. A must-have for gemologists and serious collectors.