Jewelry Tester Identification Tool, 700mah Gem Refractometer, with LCD Display, Refractive Index 1.300-3.000, Measuring Accuracy 0.001, Suitable for Diamonds, Jewelry, Jade, Crystal

Description:Our gem refractometer adopts a lightweight design, small and light, weighing only 250g, and is equipped with a high-precision sensor, based on total internal reflection for measurement. It has a super-wide range of refractive index of 1.300-3.000, and the measurement accuracy is as high as 0.001.Features:1. Lightweight and portable: It adopts a lightweight design, small and light, weighing only 250g.2. Super strong material: It is made of aluminum alloy, scratch-resistant and corrosion-resistant, and is equipped with ABS insulation switch, with built-in triple insulation protection.3. Accurate measurement: equipped with high-precision sensor, measuring range: refractive index 1.300-3.000, measuring accuracy up to 0.001, measuring error of ±0.005.4. Intelligent display: equipped with LCD display, backlight design, clear and bright, comfortable to watch.5. Easy to use: no need to use refractive oil, just bring the sample close to the measuring platform to measure.Specifications:Size: 13.5*8*2cmWeight: 250gMeasuring range: refractive index 1.300-3.000Measuring accuracy: 0.001Measuring error: ±0.005Battery capacity: 700mAhNumber of measurements: about 200 times (fully charged)Packing list:1*gem refractometer1*tweezers2*calibration block (1*1.487, 1*1.806)1*table cover1*cleaning cloth1*aluminum box1*instruction manualTips:1. The machine size is manually measured, there may be a certain error, please refer to the actual object.2. Before measuring, measure the calibration block first. If the displayed value is different from the value of the calibration block, clean the measuring platform and calibration block, and recalibrate until the value is the same (error: +-0.005) before normal measurement.

• 【PORTABLE GEM REFRACTOMETER】Our gem refractometer adopts lightweight design, small and light, weighing only 250g, and equipped with high-precision sensors, based on total internal reflection for measurement. Refractive index is a very important optical parameter, based on which the characteristics of gems can be determined.
• 【SUPER STRONG MATERIAL】The jewelry refractometer is made of aluminum alloy, which is scratch-resistant, corrosion-resistant and has a long service life; the power switch is made of ABS insulation material, with built-in triple insulation protection to prevent leakage; the diamond refractometer uses a large-screen LCD display with backlight design, which is clear and bright for comfortable viewing.
• 【PRECISE MEASUREMENT】The jewelry testing and identification tool is suitable for all gems. Equipped with high-precision sensors for precise measurement, it has a super-wide range of refractive index of 1.300-3.000, a measurement accuracy of up to 0.001, a measurement error of ±0.005, and an LCD display to assist you in precise detection.
• 【EASY TO USE】No need to use refractive oil, just bring the sample close to the measuring platform for measurement. Based on this parameter, you can tell 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.
• 【WIDELY USED】 This gem refractometer can quickly and accurately identify single and double gemstones, moissanite/diamond/colored gemstones, crystals, etc. It can be used to measure the refractive index of gemstones and solid materials, and is widely used in gem jewelry stores, etc.