Gemstone Refractometer, Jewelry Tester Identification Tools, Refractive Index 1.300-3.000, with LCD Screens, for Jewelry, Gold ＆ Silver and Diamond

★Gemstone Refractometer, Jewelry Tester Identification Tools with Large Lcd Backlight, Error: + -0.005/accuracy: 0.001/Refractive Index 1.300-3.000, for Test Jewelry①JadeGem refractometer is suitable for identifying polished finished products.Jade jade can be tested to determine whether the refractive index of jade isIt is in line with its numerical test of 1.66, and it is necessary to protect the jadeiteThere is a flat rough stone of at least 3mm②Hetian jadeGem refractometer is suitable for identifying polished finished productsHetian Jade can test whether the refractive index of Hetian Jade isIt is a rough stone that meets its numerical value of 1.61③JewelryGem refractometer is suitable for identifying various types of gemsstone, the number of refractions fixed by its various varieties of gemstonesThe value is used to determine whether the rough stone matches the characteristics of the gemstone.④DiamondDigital gem refractometer for identification of natural diamondsAnd artificial diamonds, the refractive index reaches 2.417However, diamonds with refractive index between 1.98-2.2 are all artificial.Diamond, also known as zircon▶Specifications:Measuring range: refractive index 1.300-3.000Measurement 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*Gemstone refractometer2*calibration block (1*1.487, 1*1.806)1*aluminum box1*instruction manual▶If you have any questions about our products, please feel to contact us and we will reply to you within 24 hours.

• 【Jewelry Tester Identification Tool】: The data gemstone refractometer is composed of high-sensitivity sensors and LCD screens.It can measure the refractive index value of gemstones non-destructively, quickly and accurately, and can determine other optical characteristics of gemstones. Measuring range: refractive index 1.300-3.000.a measurement accuracy of up to 0.001, a measurement error of ±0.005.
• 【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.In addition, it is equipped with two calibration blocks of 1.487 and 1.806, which are calibrated before measurement to ensure that the measurement results are accurate.
• 【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.
• 【Wide Applications】: Gemstone ldentification Tester Quickly and accurately identify single and double gemstones, moissanite/diamonds/colored gemstones/crystals, designed for measuring the refractive index of gemstones and solid materials. widely used in gem jewelry stores, etc.
• 【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.The most important tool for gemstone measurement is also the most powerful tool for identifying gem types.