Diamond Tester, Portable Gem Refractometer, 1.30-1.81 Diamond Tester Professional Jewelry Tester with 3ml Reflective Index Fluid for Measuring the Refractive Index Jewelry Test Tool - VINGVO, VINGVOhux45pkgo1

• 【Gem Tester】Diamond tester is the main tool for measuring gemstones. Jewelry tester can measure the refractive index value of gemstones non-destructively, accurately and quickly. 【Features】Low battery consumption for long service time. This gem refractometer features high accuracy and easy operation. Refractive Index Range: 1.30-1.81 RI, refractive Index: 0.01. 【Portable Design】Gem tester size is approx. 13× 6 ×3.5cm/5.1× 2.4×1.4inch, 721g Weight, very lightweight and compact, easy to carry. 【Notice】The light source for measurement should be bright and uniform for easy observation. After using the jewelry tester, please place it in a dry place to prevent moisture from affecting the accuracy of the measurement. 【Package Contents】Gem tester includes 1 x Refractometer, 1 x Electric Torch (Powered by 1 * AA battery which is NOT included),1 x English Manual,1 x 3 ML Reflective Index Fluid.