Gemstone Refractometer Tester, Digital Jewelry Tool for Authenticity, Measures Refractive Index 1.300-3.000, Error ±0.005, for Gold, Silver & Diamonds

Features: - No Oil & Effortless : Skip the messy refractive oils! Simply place your gem or solid sample onto the measurement platform for a fast, clean, and contactless reading. - Lab-Grade Accuracy : Features a high-precision sensor delivering measurements from 1.300 to 3.000 with an impressive accuracy of ±0.001 and error margin of only ±0.005. - Portable : Crafted from lightweight yet rugged high-strength aluminum alloy (only 250g / 0.55 lbs), it withstands scratches, corrosion, and fieldwork. - LCD Display : The bright backlit LCD display ensures clear readings anywhere. - Long-Lasting & Efficient: Powered by a 700mAh battery providing approximately 200 measurements per charge. Specifications: Product name: Digital Gemstone Refractometer 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(5.31*3.1*0.94inch) Package Size: 18*15*7 cm Gross Weight: 655g Packing list: 1 * Gemstone Refractometer Notes: 1.Due to manual measurement, the size error is 1-3cm. Errors may occur, please refer to the actual product. 2.Due to shooting and environmental reasons, the color is subject to the actual product.

• 【Gemstone Identification Tool】The gemstone refractometer is composed of high-sensitivity sensors and LCD screens.It can measure the refractive index value of gemstones non-destructively and accurately,and can determine other optical characteristics of gemstones
• 【Precise Measurement】Jewelry Authenticity Tester measuring range: refractive index 1.300-3.000.a measurement accuracy of up to 0.001, a measurement error of ±0.005.
• 【Excellent Materials】Crafted with hard aluminum alloy for scratch-proof work platforms,this gem tester provides stable support for precision testing. It is equipped with an ABS engineering plastic power switch and built-in triple insulation protection to effectively block the risk of leakage.
• 【Clear Reading】Digital refractometer features a large LCD screen, 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
• 【Wide Applications】Quickly and accurately identify single and double gemstones, diamond colored gemstones,designed for measuring the refractive index of gemstones and solid materials