Digital Gemstone Refractometer,Professional Digital Refractometer for Gemstones,Portable Tester 1.300-3.000 RI,0.001 Accuracy,700mAh Battery for 10000 Tests,with LCD Display,for Jewelry,Jade,Crystal

➤Are you still worrieds about not being able to quickly distinguish genuine diamonds from fakes, causing clients to question your professional authority?- The gemstone refractometer uses precise measurements of the refractive index—an undeniable physical metric—to instantly determine the authenticity of a diamond, allowing professionals to see for themselves.➤Feature- Precision Measurement: Accuracy up to ±0.005, minimum scale value of 0.001.- Large LCD Backlit Screen.- Durable Aluminum Alloy Table.- Insulation Switch: Made of ABS material.- Built-in 700mAh lithium battery, up to 10,000 measurements.➤SpecificationsSize: 135 x 78 x 24 mm (5.31" x 3.07" x 0.94")Weight: 250g (0.55 lbs)Measurement Range: Refractive Index 1.300 ~ 3.000Accuracy: ±0.001Measurement Error: ±0.005Battery Capacity: 700mAh BatteryApprox. Measurements per Charge: ~10000➤Package Include:1 * Gemstone Refractometer2 * calibration Block (1*1.487,1*1.806)1 * Aluminum Box1 * Tweezers1 * Countertop cover1 * Instruction Manual➤NotesFor optimal accuracy, always calibrate the device using the included calibration blocks (1.487 & 1.806) before each use session.

• 【EXCELLENT DESIGN】The portable design makes the jewelry refractometer compact and lightweight, weighing only 250 g. And it adopts high-strength aluminum alloy shell, which is scratch-resistant and has a long service life. In addition, it is equipped with an LCD backlit display and ABS insulated switches, with built-in triple insulation protection, ensuring clear and bright viewing comfort while ensuring safe use.Powered by a rechargeable 700mAh lithium battery, it supports up to 10,000 measurements per charge.
• 【GEM REFRACTOMETER】The digital gemstone refractometer refractive index, as an important optical characteristic parameter of gemstones, is an important basis for distinguishing gemstone types and judging their physical properties. Our gemstone refractometer has a built-in high-precision sensor and performs measurements based on the principle of total internal reflection, can provide scientific and reliable theoretical support for gem identification.
• 【PRECISE MEASUREMENT】The digital gemstone refractometer as a core tool in the field of jewelry identification, it can measure the refractive index of gemstones non-destructively, quickly and with high precision. Its built-in high-precision sensor covers a measurement range of 1.300-3.000, meeting the identification needs of most common gemstones and providing quantitative data to support identification results. .a measurement accuracy of up to 0.001,a measurement error of ±0.005.
• 【EASY TO USE】The digital gemstone refractometer no need to use refractive oil, just bring the sample close to the measuring platform to measure. Based on this parameter, you can tell whether the gemstone is uniaxial or biaxial. The process not only simplifies working but also maintains the integrity of delicate gems. In addition, it is equipped with two calibration blocks of 1.487 and 1.806, which need to be calibrated before measurement to ensure the accuracy of the measurement results.
• 【WIDE APPLICATION】Designed for measuring the refractive index of gemstones and various solid materials, it can quickly and accurately identify single crystal gemstones, twin crystal gemstones, diamonds and various colored gemstones. It is widely used in jewelry appraisal institutions, gem processing factories, collectors and other scenarios.