Jewelry Tester Identification Tools, Digital Gemstone Refractometer, Refractive Index 1.300-3.000, Measurement Error: ±0.003, with 700mAh Battery/LCD Display, for Jadeite Sapphire Diamond

➤Are you concerned about your clients questioning your professional authority because you can't quickly distinguish real from fake diamonds?This gemstone refractometer uses the authoritative and indisputable physical property of refractive index for precise testing. With simple measurements, you can quickly determine the authenticity of a diamond, providing clear results and earning client trust with professional data.➤Product Features:✅Simple Operation: No need for cumbersome refractive oil!✅Precise Measurement: Accuracy up to ±0.003, minimum scale value 0.001.✅Large Backlit LCD Screen: Clear display even in low-light environments, easy to read data, reducing eye fatigue.✅Durable Aluminum Alloy Worktable: Made of hardened material to ensure long-term stability.✅Insulated Switch: Made of ABS material.✅Long Battery Life: Built-in 700mAh lithium battery, allowing for up to 10,000 measurements.✅Wide Range of Applications:Jade, Hetian Jade, Jewelry Grade, Diamond➤Specifications:Name: Digital Gemstone RefractometerMeasurement Range: Refractive Index 1.300 ~ 3.000Accuracy: ±0.001Measurement Error: ±0.003Battery Type: Lithium BatteryBattery Capacity: 700mAh BatteryBattery Life: Approximately 10,000 testsDimensions: 135 x 78 x 24 mm (5.31 in x 3.07 in x 0.94 in)Weight: 250 g (0.55 lb)➤Package List:1 * Gemstone Refractometer2 * Calibration Blocks (1 x 1.487 mm, 1 x 1.806 mm)1 * Aluminum Case1 * Tweezers1 * Tabletop Cover1 * Instruction Manual➤Note1.For optimal accuracy, always calibrate the device using the included calibration blocks (1.487 mm and 1.806 mm) before each use.2.If you have any questions about our products, please contact us at any time, and we will reply within 24 hours.

• ✅【Professional Gemstone Identification Tool】: This Portable Gem Refractometer can non-destructively, quickly, and accurately measure the refractive index of gemstones and determine other optical properties. Measurement range: refractive index 1.300-3.000, measurement accuracy up to 0.001, measurement error ±0.003. Say goodbye to the vague judgment of visual inspection; accurately distinguish between natural/imitation gemstones and treated gemstones.
• ✅【Clear and legible, ultra-long battery life】: This jewelry testing and identification tool features a large backlit LCD screen, a high-sensitivity sensor, and intelligent electronic components, ensuring clear readings even in low-light conditions. Powered by a 700mAh rechargeable lithium battery, Refractometer Jewelry can perform up to 10,000 measurements per charge, making it suitable for various applications including laboratory, field gem identification, and jewelry stores.
• ✅【Easy to operating】: Unlike traditional methods, this Professional Digital Gem Tester not require refractive oil and is simple to use. Simply place the sample close to the measuring platform to begin measurement. Based on this parameter, you can determine whether the gemstone is a uniaxial or biaxial crystal. In addition, the instrument is equipped with two calibration blocks, 1.487 and 1.806 respectively, which need to be calibrated before measurement to ensure the accuracy of the results.
• ✅【Portable, Durable, Safe & Reliable】: This Jewelry Authenticity Tester weighs only about 250 g, featuring a compact, lightweight design for easy carrying and operating. Made from high-strength aluminum alloy, it is scratch- and corrosion-resistant for long-term durability. The backlit LCD ensures clear readings even in low light, while the ABS insulated switch and triple insulation protection enhance safety, stability, and reliability during use.
• ✅【Wide Gemstone Compatibility】: This professional gemstone refractometer supports both uniaxial and biaxial crystals, enabling fast and accurate identification of diamonds, moissanite, colored gemstones, natural or synthetic gems, minerals, and other solid materials. Using a high-precision sensor and total internal reflection technology, Jewelry Authenticity Tester delivers reliable, scientific results and is widely used by jewelry appraisers, gem processors, and collectors.