Desktop Polariscope is a small instrument which can quickly
determine the properties of gemstone such as single refraction,
double refraction and axis. This portable polariscope is also very
useful in identifying moissanite, detecting strain diamonds and
other gems and separating synthetic amethyst from genuine.
This is a traditional Tungsten light source desktop polariscope.
After long time working, the polarizer (especially the lower
polarizer) will be depolarized because of its high heat occurring.
Changing the polarizer is needed for period time.