Gemological labs, gemology schools/institutes, gem&jewelry
The polariscope is one of the most underestimated tools in
gemology. Most gemologists use it to quickly determine if the stone
at hand is isotropic or anisotropic or, at best, to determine the
optic character of gemstones.
In addition, the polariscope is very useful for distinguishing
solid inclusions from negative inclusions as well as for spotting
A polariscope uses polarized light for gem identification. It
consists of two polarized filters, one on the top and one on the
bottom of the instrument. Both the polarizer and the analyzer have
their own vibrational planes. When the vibrational plane of the
polarizer is at right angles to the vibrational direction of the
analyzer, the field between them remains dark. This position is
known as the "crossed position". In this position, gems can be
tested to determine if they are:
- anomalously double refractive or an
- anisotropic aggregate
Fable Brand Polariscope with:
You can know the axial of Gemstone then can be grading the type of
- Polariscope with 49mm heavy calibre.
- With rotatable sample platform.
- With Yellow LED light sources.
- Package: bandbox packing
Black Gemological Portable Polariscope with LED Cold Light Source
4,Rotatable sample platform.
5,LED cold light source.
6,Power supply: .
7,Package: inner black leather box and outer carton.