Pera Polariscope

*Dual Light Source Switching. Yellow light has good penetration and can reveal the internal cracks
and impurities of jade. White light has good color rendering,and can help the user see the
true color of the gemstone.                                                  

*A Pera polariscope is a commonly used method for testing gemstones.It uses a polariscope to
detect the rotation and birefringence of light in a material, thereby determining the properties and
authenticity of the gemstone.