Touch Instrument Tools

Diffraction Grating Spectroscope Gemological Jeweller Tester



The spectroscope is an important tool of the modern gemologist.This concerns the infrared or near infrared spectroscopes. 

A handheld spectroscope for visible light shows the absorption lines of the elements involved in producing its color. 

It helps to separate ruby (chrome) against red or pink sapphire (iron) to name only one example.

This tool requires a good training and an appropriate light source. 

Colorless stones show no absorption spectrum. 

The sunlight shows a typical absorption spectrum, the Fraunhofersche lines. 

Fluorescence lamps show an emission spectrum. 

For demonstration you may examinate besides gemstones also liquids or flames colored by metal-salts


Model: TGC01

Material: Aluminum

Accuracy: 2nm

Size: long554mm x lens 14mm

Package Weight: 50g

Lens: the grating lenses

The eyepieces: 5mm coated optical lens.


Noted: When using, please adjust the distance between the gem and the objective lens, so that the gem is full of the vision of the whole eyepiece, not too far away.

Add to Cart:

  • Model: TGC01
  • Shipping Weight: 0.4lbs

This product was added to our catalog on Monday 15 January, 2018.

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