Gemstone Refractometer – Professional Digital Gem Tester for Jewelry, Gemstone, Ruby, Jadeite, Sapphire, Diamond, and Lab Use

Are you concerned about distinguishing genuine diamonds from fakes and maintaining professional authority? This gemstone refractometer utilizes precise measurements of the refractive index to verify the authenticity of diamonds, enabling professionals to make informed assessments. Advantages: 1. Skip messy refractive oils. Simply place the gem or solid sample onto the measurement platform for a fast, clean, and contactless reading. 2. High-precision sensor provides measurements from 1.300 to 3.000 with an accuracy of ±0.001 and an error margin of only ±0.005. 3. Constructed from lightweight yet durable aluminum alloy (250g / 0.55 lbs), designed to resist scratches, corrosion, and tough fieldwork conditions. The bright backlit LCD display ensures clear readings in any setting. 4. Long-lasting efficiency with a 700mAh battery, offering approximately 200 measurements per charge. 5. Complete package includes: Refractometer, Aluminum Box, Tweezers, Countertop cover, Calibration Blocks (1.487 & 1.806), and English Manual. Specifications: - Size: 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 ~ 3.000 - Accuracy: ±0.001 - Measurement Error: ±0.005 - Battery Capacity: 700mAh - Approx. Measurements per Charge: ~200 Notes: For optimal accuracy, always calibrate the device using the included calibration blocks (1.487 & 1.806) before each use.

• Gemstone analysis tool: This refractometer accurately measures the refractive index, a crucial parameter in identifying gemstones and assessing their properties. Featuring a built-in high-precision sensor, it utilizes the principle of total internal reflection to provide reliable support for gem identification.
• High accuracy: Essential for jewelry evaluation, this tool measures gemstones non-destructively and quickly with exceptional precision. It covers a measurement range of 1.300-3.000, suitable for most common gemstones, and offers quantitative data with a measurement error of only ±0.005.
• User-friendly operation: Requires no refractive oil; simply place the sample on the measuring platform to obtain readings. This tool distinguishes between uniaxial and biaxial gemstones. It includes calibration blocks of 1.487 and 1.806 to ensure accurate measurements.
• Durable and portable design: Weighing only 250 g, this lightweight refractometer features a robust aluminum alloy shell that is scratch and corrosion-resistant. It comes with an LCD backlit display and insulated switches for enhanced safety and visibility.
• Versatile applications: Specifically designed for measuring the refractive index of gemstones and solid materials, it accurately identifies single and twin crystal gemstones, diamonds, and various colored stones. Ideal for use in jewelry appraisal, gem processing, and by collectors.