The gemological refractometer is one of the most important tools in a gemological laboratory, as the refractive index is one of the most important optical parameters.Gloss of gemstone can be estimated by the parameter. It indicates (not measures) the refraction index of a gemstone, which often gives vital clues to the identity of a gemstone. Although one would expect a refractometer to measure the refraction of light inside a gemstone, this is not the case. Instead it is based on a unique optical phenomenon named Total Internal Reflection (or TIR).
Our gemological refractometer is characterized by small volume and less weight. We offer all kinds of gemological refractometer for professional testing and students learning. It is easy to carry,so it is popular instrument used on jewelry market.