Professional Diamond Tester, 1.300-3.000 Jewelry Refractometer, Portable Gem Tester for All Stones Refractometry Testing Tools Measurement Error: ±0.005 / Accuracy: 0.001

Principle：Operating on the basis of total internal reflection, the gemstone tester measures one of the most fundamental optical parameters of gemstones—the refractive index. This key characteristic allows users to accurately identify and differentiate gem types based on their unique optical properties. ①Jade Gem refractometer is suitable for identifying polished finished products. Jade jade can be tested to determine whether the refractive index of jade is It is in line with its numerical test of 1.66, and it is necessary to protect the jadeite There is a flat rough stone of at least 3mm ②Hetian jade Gem refractometer is suitable for identifying polished finished products Hetian Jade can test whether the refractive index of Hetian Jade is It is a rough stone that meets its numerical value of 1.61 ③Jewelry Gem refractometer is suitable for identifying various types of gems stone, the number of refractions fixed by its various varieties of gemstones The value is used to determine whether the rough stone matches the characteristics of the gemstone. ④Diamond Digital gem refractometer for identification of natural diamonds And artificial diamonds, the refractive index reaches 2.417 However, diamonds with refractive index between 1.98-2.2 are all artificial. Diamond, also known as zircon Specifications: Measuring range: refractive index 1.300-3.000 Measurement error: + -0.005 Measurement accuracy: 0.001 Battery life:10.000 Times Power supply: 700mA Lithium Battery Product Size: 13.5x7.8x2.4cm(5.31x3.1x0.94inch) Net weight: 0.8kg(1.76lbs) Products include: 1*Gemstone refractometer 2*calibration block (1*1.487, 1*1.806) 1*aluminum box 1*instruction manual

• - **Essential Gem Identification Tool**: This advanced refractometer is an indispensable tool for jewelers, providing non-destructive refractive index measurements (ranging from 1.300 to 3.000) with unmatched accuracy. Crucial for verifying gemstone authenticity through their optical properties.
• - **User-Friendly Testing Procedure**: No refractive oil is required! Simply place the gem's measurement facet against the platform for an instant determination of its crystal structure—making gem identification more efficient than ever.
• - **Premium Quality Construction**: Crafted from du-rable aluminum alloy for a scratch-resistant work sur-face, this instrument ensures long-lasting performance. Enhanced with ABS engineering plastic for power controls and triple-layer internal insulation, it enhances safety by protecting against potential electrical hazards.
• - **Fundamental Working Principle**: Leverages the principle of total internal reflection, allowing users to determine the refractive index—a key optical parameter for identifying gemstone characteristics based on specific measurements.
• - **Versatile Applications**: This Gemstone Identification Tester is perfect for swiftly and accurately identifying single and double gemstones, including moissanite, diamonds, colored gemstones, and crystals. For use in gem jewelry stores and various other settings, this tool is essential for any gem enthusiast or professional.