CZ Gem Testing Instruments Refractometer With Testing Range 1.35-1.85

CZ Gem Testing Instruments Refractometer with Testing range 1.35-1.85

The refractometer is one of the most important tools in a gemological laboratory. It indicates the refraction index of a gemstone, which often gives vital clues to the identity of a gemstone. Refractometer Fable brand with.

Many gemstones are double refraction(birefringence) on optical character. For the gemstones,you must test and get its minimum and maxinum refractive index ,and their margin,so this instrumentcan give a accuracy reference for identifing gemstones.

As long as you obey the step,you can obtian the above mentioned data on any level facet. Revolve the gemstone and get two data on each place is the most important steps.