The main purpose of gem microscopes

Gemstone microscopes are used in jewellery appraisals to observe the unobservable phenomena such as the inclusions and surface features of samples, and are indispensable gem identification instruments for the identification of synthetic products, optimized treatment products, and artificial products. It also has a very important application in diamond grading, such as the observation of the clarity characteristics, observation and evaluation of the diamond's color grade.

With a variety of light sources, to achieve the best observation.

The main purpose 1 Check the gem surface characteristics Gem surface scratches, erosion, damage, split surface (bubble, gloss difference), double crystal pattern, triangular growth logo, growth pattern, growth ribbon and so on.

2 Observing the internal characteristics of gemstones, including the type, shape, quantity, double crystal face, growth pattern, color and color distribution characteristics of the inclusions, etc. It is of significance for gemstones with special inclusions.

3 Observe the gemstone after the facet.

4 Observation of the absorption spectrum A hand-held beam splitter is used to replace the eyepiece and transmission illumination is used to detect the spectral features of the stone.

5 Observe the interferogram. Use two polarizers to make them orthogonal. Use the condenser under the object table to provide the converging light. Check the interferogram of the gemstone. The gemstone to be measured must be immersed in an immersion liquid with a similar refractive index, and use a gem clip. Live stones until interference patterns appear.

6 Check the polychromism of the gem. Add a polarizer below the gemstone. When turning the gemstone, you can only see one color at a time. Turn the gemstone quickly to observe the effect better.

7 Photomicrographics A camera can be used to take photographs of the microscopic features of the gemstone. The gemstone inclusion image is obtained in this way.