Gemology school Fable diffraction Gem Spectroscope With Adjustable Focus FGS-1A

Description:
The spectroscope is a tool for examining which parts of white light are absorbed by a gemstone. Materials can absorb parts of the electromagnetic spectrum, and when the absorbed parts fall within the visible range, that absorbed part will influence the color of the material.
When a gemstone is observed with a spectroscope, the absorbed parts show as dark lines and/or bands in the spectroscope image.

Fable Prism Spectroscope with:
1. Grating portable spectroscope.
2. with high resolution.
3. With adjustable focus.
4. Black appearance for avoiding reflecting interference.

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