Gemstone Refractor, Jewelry Tester with LCD, Identify Diamonds, Jade & More, Refractive Index .300-3.000, Essential Tool for Jewelers & Collectors

Are you concerned about distinguishing genuine diamonds from imitations, leading to doubts about your professional credibility? Our gemstone refractometer provides precise measurements of the refractive index, enabling you to verify the authenticity of diamonds with confidence. AdvantagesSkip the hassle of messy refractive oils! Simply place your gemstone or solid sample on the measurement platform for a quick, clean, and contactless reading. Equipped with a high-precision sensor, this refractometer delivers measurements ranging from 1.300 to 3.000 with remarkable accuracy of ±0.01 and an error margin of only ±0.005. Constructed from lightweight yet durable high-strength aluminum alloy (weighing only 250g / 0.55 lbs), it is resistant to scratches, corrosion, and ideal for fieldwork. The bright backlit LCD display ensures clear readings in any environment. Long-lasting and efficient, the device is powered by a 700mAh battery, allowing for approximately 200 measurements per charge. Complete Package for Success: Everything you need is included: the refractometer, an aluminum carrying case, tweezers, countertop cover, calibration blocks (.487 & .806), and an English manual. SpecificationsSize: 35 x 78 x 24 mm (5.3 x 3.07 x 0.94) Weight: 250g (0.55 lbs) Measurement Range: Refractive Index 1.300 ~ 3.000 Accuracy: ±0.01 Measurement Error: ±0.005 Battery Capacity: 700mAh Approximate Measurements per Charge: ~200 TipsFor optimal accuracy, always calibrate the device using the included calibration blocks (.487 & .806) before each use. After-sales Se

• 【Gem Reftometer】The Refractive Index is a crucial optical characteristic for distinguishing gemstone types and evaluating their physical properties. Our Gemstone Reftometer features a built-in high-precision sensor that operates on the principle of total internal reflection, providing reliable theoretical support for gem identification.
• 【Precise Measurement】This essential tool in jewelry identification measures the refractive index of gemstones quickly and non-destructively with high accuracy. Its advanced sensor has a measurement range of 1.300-3.000, catering to the identification needs of most common gemstones while delivering quantitative data to support your identification results. The measurement error is as low as ±0.005.
• 【Easy to Use】To use the Reftometer, simply apply refractive oil and bring the gemstone close to the measuring platform. By analyzing the refractive index, you can determine if the gemstone is uniaxial or biaxial. Additionally, it comes with calibration blocks of 1.487 and 1.806, which must be calibrated prior to measurement to ensure accuracy.
• 【Excellent Design】The portable design makes this jewelry Reftometer compact and lightweight, weighing only 250 g. Constructed with a high-strength aluminum alloy shell, it is scratch-resistant, corrosion-resistant, and built for longevity. The device features an LCD backlit display and ABS insulated switches, ensuring clear visibility while maintaining safety during use.
• 【Wide Application】Designed for measuring the refractive index of gemstones and various solid materials, this Reftometer quickly and accurately identifies single crystal gemstones, twin crystal gemstones, diamonds, and various colored gemstones. It is widely utilized in jewelry appraisal institutions, gem processing factories, and by collectors, among other applications.