Digital Refractometer for Gemstones - Professional Tool for Ruby, Jadeite, Sapphire, Diamond, and Lab Use - Accurate, Portable, Essential for Jewelers and Gem Enthusiasts

This gemstone refractometer is a precision tool designed for the identification of polished gemstones, featuring a large LCD backlight for clear readings. It measures refractive indices from 1.300 to 3.000 with an accuracy of 0.001 and an error margin of ±0.005. Ideal for testing various gemstones, including jade and Hetian jade, it helps determine if their refractive indices match expected values (1.66 for jade and 1.61 for Hetian jade). It also distinguishes between natural and artificial diamonds, with natural diamonds having a refractive index of 2.417. ▶Specifications:Measuring range: refractive index 1.300-3.000Measurement error: + -0.005Measurement accuracy: 0.001Battery life:10.000 TimesPower supply: 700mA Lithium BatteryProduct Size: 13.5x7.8x2.4cm(5.31x3.1x0.94inch)Net weight: 0.8kg(1.76lbs)▶Products include:1*Professional Digital Gemstone Refractometer2*calibration block (1*1.487, 1*1.806)1*aluminum box1*instruction manual▶Note: Slight color variations may occur due to lighting, and a 1-3cm measurement error is possible due to manual handling.

• Refractive Index Measurement: This tool provides accurate Refractive Index readings, essential for identifying various types of gemstones and evaluating their characteristics based on the principles of Total Internal Reflection. Perfect for gem enthusiasts and professionals alike, it enhances your ability to assess gemstone quality effectively.
• Accurate Readings: Quickly and non-destructively measures the Refractive Index of gemstones within a range of 1.300 to 3.000. This tool provides essential quantitative data to support identification, ensuring a measurement error of only ±0.005. Ideal for gemologists and jewelry enthusiasts, it enhances your ability to assess gem quality effectively.
• User-Friendly: No Refractive Oil Required; just place the Mstone Sample on the Uring Platform. This Set Includes Calibration Blocks of 1.487 and 1.806 for Accurate Measurements. Ideal for Precision Testing in Optical Applications, Ensuring Reliable Results and Easy Setup for Professionals and Enthusiasts Alike.
• Lightweight and Portable Design: Weighs just 250 g with a durable aluminum alloy casing that resists scratches and corrosion. Features an LCD backlit display for clear visibility and safely illuminated switches, making it ideal for both indoor and outdoor use. Perfect for those seeking a reliable and stylish solution for their needs.
• Versatile Application: Perfect for measuring the Refractive Index of gemstones and other solid materials. Ideal for identifying single and twin crystal gemstones, diamonds, and various colored stones. Widely used in Jewelry Appraisal and gemstone mapping, this tool enhances your ability to evaluate precious stones accurately.