Gem Refractometer, RHG181 1.30-1.81 Diamond Tester, Rapid Appraisal, Light Weight,High Accuracy Refractometer for Gemstones, Gem Tester for All Stones with 3ml Reflective Index Fluid

Rapid Appraisal: Diamond tester can quickly and accurately identifies single and double gemstones. Helps identify diamonds, moissanites and colored gemstones, speeds up identification of gemstones in packages, even and reliable results every time with RI fluid, clearly visible display and easy to read measurements.
Light Weight: Gem refractometer is perfectly designed to be lightweight and compact, fitting easily into your pocket or tool bag for convenience and portability.
Long Service Life:Crafted with high-grade all-metal construction, this refraktometer boasts of impressive durability. What's more, it comes with low battery consumption, which guarantees prolonged usage time.
High Accuracy: Specializing in identifying single and double refracting gemstones swiftly and accurately, this gem tester professional stands out as a professional tool for gemologists. With a measurement range of 1.30 - 1.81, it offers a wide array of identification possibilities.
Method: Drops of special refractive oil onto the surface of prism by a thin glass bar to judge whether a gem is uniaxial or biaxial photopositive or photonegative.There's 3ml of oil, can be used multiple times.

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