A gem microscope is similar to a biological or medical microscope in that it is binocular, and uses compound lenses.
A binocular magnifying device has two eyepieces so that both eyes are used at once. This is ideal for getting a good three dimensional view. In a compound scope, there is a set of lenses close to the object being magnified and a set in the eyepieces.
With this set-up, magnification is compounded, meaning that, for example, if the objective lens is 5x and the ocular lens is 10x, the total magnification is 50X (5X x 10X).
A binocular magnifying device has two eyepieces so that both eyes are used at once. This is ideal for getting a good three dimensional view. In a compound scope, there is a set of lenses close to the object being magnified and a set in the eyepieces.
With this set-up, magnification is compounded, meaning that, for example, if the objective lens is 5x and the ocular lens is 10x, the total magnification is 50X (5X x 10X).
Gem scopes differ from biological scopes in that the total maximum magnification is usually lower and there are more lighting options.
Professional grade gem microscopes generally include:
- brightfield illumination
- darkfield illumination
- oblique fighting
- overhead lighting
- light diffusing system
- a system for immersing the object in liquid in a well for viewing
- polarizing lighting
- pivoting stone holder
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