Digital Refractometer for Jewelry & Gem Testing – mstone Professional Device for Ruby, Jadeite, Sapphire, Diamond, Lab Use – Accurate Measurement & Easy to Use

Gemstone Refractometer is a precise Instrument for identifying various types of gems and jewelry. It features a large LCD backlight for easy reading, with an error margin of ±0.005 and an accuracy of 0.001. The refractive index range is 1.300 to 3.000, making it suitable for testing materials like jade, Hetian jade, and diamonds. - Jade: Designed for identifying polished finishes, the refractometer tests jade's refractive index, which should align with a numerical value of 1.66. A flat rough stone of at least 3mm is recommended for accurate testing.- Hetian Jade: This tool is also suitable for Hetian jade, determining if the refractive index meets the value of 1.61 to confirm authenticity.- Jewelry: The refractometer identifies various gem types, allowing users to correlate the refractive index with gemstone characteristics to assess authenticity.- Diamond: It aids in identifying both natural and synthetic diamonds, with a refractive index of 2.417. Diamonds with refractive indices between 1.98 and 2.2 indicate synthetic origin.Specifications:- Measuring range: Refractive index 1.300-3.000- Measurement error: ±0.005- Measurement accuracy: 0.001- Battery life: 10,000 uses- Power supply: 700mA Lithium Battery- Product Size: 13.5x7.8x2.4cm (5.31x3.1x0.94 inches)- Net weight: 0.8kg (1.76lbs)Included in the package:- 1 Gemstone refractometer- 2 calibration blocks (1 at 1.487, 1 at 1.806)- 1 aluminum box- 1 instruction manual

• This Refractometer accurately measures the Refractive Index, an essential parameter for identifying gemstones and evaluating their properties. Equipped with a built-in high-precision sensor, it employs the principle of Total Internal Reflection to deliver reliable support for gemstone identification. Ideal for gem enthusiasts and professionals alike, this tool enhances your gemstone analysis experience.
• High Accuracy: Ideal for Jewelry Evaluation, this tool measures gemstones non-destructively and quickly with exceptional precision. It covers a measurement range of 1.300-3.000, suitable for most common gemstones, and provides quantitative data with a measurement error of only ±0.005, ensuring reliable assessments for your jewelry needs.
• User-Friendly: No Refractive Oil Needed; Simply Place the Sample on the Uring Platform for Quick Readings. This Tool Effectively Distinguishes Between Uniaxial and Biaxial Minerals. It Comes with Calibration Blocks of 1.487 and 1.806 for Accurate Measurements, Making It an Essential Tool for Geologists and Mineralogists.
• Lightweight and Portable Design: Weighing just 250 g, this durable Refractometer features a robust Aluminum Alloy Shell that is both Scratch and Corrosion-Resistant. Equipped with an LCD Backlit Display and Illuminated Switches, it ensures Enhanced Safety and Visibility for precise measurements. Ideal for various applications, it’s a must-have tool for any enthusiast.
• Versatile Application: Specifically designed for measuring the Refractive Index of gemstones and solid materials, it accurately identifies single and twin crystal gemstones, Diamonds, and various colored stones. Ideal for use in Jewelry Appraisal, Gem Testing, and by Collectors. Enhance your gemstone identification process with this essential tool.