Professional Gem Refractometer,Jewelry Tester Identification Tools with Display, Measurement Error: ±0.005/accuracy: 0.001/refractive Index 1.300-3.000, for Jewelry and Diamonds

Characteristic:1. The large LCD screen with backlight design provides comfortable viewing and bright and clear effects.2. Made of hard aluminum alloy material, it is difficult scratch.3. Insulated material to prevent power leakage and unnecessary damage.Specifications:Measuring Range: Refractive index 1.300-3.000Measurement Error: ±0.005Measurement Accuracy: 0.001Lithium Power Supply Life: 10.000 TimesPower Supply: 700mA Lithium Power SupplyProduct Size: 13.5x7.8x2.4cm(5.31x3.1x0.94inch)Net Weight: 0.8kg(1.76lbs)Products Include:- Gemstone Refractometer x 1- Box x 1Notes:Please allow the slight color difference caused by the shooting light and 1-3cm error due to manual measurement.

• 【High Quality Materials】: The gem refractometer uses hard aluminum alloy to create a work surfaces, which is scratch-resistant and sturdy, providing 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
• 【Jewelry Tester Identification Tool】: It is the most important tool for gem identification, and can measure the refractive index value of gemstones non-destructively, quickly and accurately. Refractive index test range 1.300-3.000
• 【Test Method】No refractive oil is required, just bring the sample's measuring surfaces close to the measuring platform to measure. Based on this parameter, you can determine whether the gem is a uniaxial crystal or a biaxial crystal
• 【Working Principle】: The working principle of the refractometer is based on total internal reflection. The refractive index is a very important optical parameter, and the characteristics of gemstones can be determined based on this parameter
• 【Wide Range of Applications】: Quickly and accurately identify single and double gemstones, diamond colored gemstones, designed for measuring the refractive index of gemstones and solid materials