FAST AND ACCURATE IDENTIFICATION: This jewelry testing kit is designed to measure the refractive index of and solid materials. Many consider the refractometer to be the most important of all testing instruments. The primary use of a refractometer is to measure the angle of bending or refraction of light as it passes through a. Uniform and results are obtained every time, and the display is clearly visible and easy to read measurements.
WIDE APPLICATION: This tester pen has a wide range of applications. Refractometer is your primary and most powerful tool in identification. Like a typical critical angle refractometer, it will measure the refractive index of faceted stones.