Shenzhen Fable Jewellery Technology Co., Ltd.
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Portable Gem Polariscope distinguish homogeneous heterogeneous gem FPP-30
Model Number: FPP-30
Specification:
| Product Name | Portable Polariscope |
| Appearance | black aluminium alloy |
| Polariscope film | 30mm Diameter |
| Product Weight | 130 g |
| Product Size | 35mm Diameter*92mm Height |
| Light | white LED cold light sources |
| Power Supply | Built-in 3V button battery |
| Feature | Rotatable sample platform |
| Function | Observe the optic character of Gemstone |
| Package | inner black leather box and then a gift paper box |
Product Description
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:
