Digital Gemstone Refractometer,Jewelry Authenticity Tester,Refractive Index 1.300-3.000,700mAh Battery for 10000 Tests,Error ±0.005/Accuracy: 0.001 with LCD Screens for Jewelry,Diamonds,Jade

➤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*instruction manual➤NotesFor optimal accuracy, always calibrate the device using the included calibration blocks (1.487 & 1.806) before each use session.

• 【Gem Refractometer】The working principle of the refractometer is based on total internal reflection.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.
• 【Precise Measurement】As a core tool in the field of jewelry identification, the gemstone tester 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. The measurement error is as low as ±0.005.
• 【Easy to Use】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. In addition,this gem Identification Instrument 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.
• 【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, corrosion-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.
• 【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.