|Place of Origin:||China|
|Minimum Order Quantity:||1PCS|
|Delivery Time:||7-10 days after order confirmation.|
|Payment Terms:||T/T, Western Union|
|Product Name:||Handheld UV Fluorescence Lamp||SW/LW:||253.7nm/365nm|
Gemological labs, gemology schools/institutes, gem&jewelry industrials, --etc.
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 polysynthetic twinning.
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:
Fable Brand Polariscope with:
You can know the axial of Gemstone then can be grading the type of Gemstone.
|1.Product Name:Handheld UV Fluorescence Lamp|
|2.Product Size:170mm Length*65mm Width*90mm Height;|
|3.365nm and 254nm wavelength ultraviolet light,observe the standard UV characteristics of the gem|
|4.Observe the mouth with magnifying eyepiece|
|5.Portable design, easy to move and use, suitable for identification of large samples of the dark|