Prism Spectroscope

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PRISM SPECTROSCOPE MODEL NO.- ACM-PS-22605

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PRISM SPECTROSCOPE MODEL NO.- ACM-PS-22605

Weiber's Spectroscope is ideal tool of the modern gemologist. Our equipment is particularly suitable the infrared or near infrared spectroscopes.

Application Ÿ Handheld spectroscope Ÿ Visible Light Shows absorption lines of the elements involved in producing its color. Ÿ Separation of ruby (chrome) against red or pink sapphire (iron) to name only one example. Ÿ Liquids or Flames colored by metal-salts.

Conditions for Proper Functioning of Spectroscope This tool requires Ÿ A Good Training Ÿ An appropriate Light source

The weiber's Spectroscope dispalys the following results Ÿ Colorless stones show no absorption spectrum Ÿ The sunlight shows a typical absorption spectrum the Fraunhofersche lines Ÿ Fluorescence lamps show an emission spectrum.

TECHNOCRACY PVT. LTD.

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PRISM SPECTROSCOPE MODEL NO.- ACM-PS-22605

The prism spectroscope is based on dispersion. The light enters through a narrow slit (some models allow you to adjust the width of the slit) and is then dispersed through a series of prisms. Some models have an attachment with a built-in scale. These models are generally more expensive than their diffraction type cousins Because prism spectroscopes are based on dispersion, the blue area of the spectrum is more spread out and the red parts are more condensed than the diffraction grating types.

Proper Usage of Spectroscope Proper use of the spectroscope and lighting is vital when wanting to see good spectra of gemstones.

The most widely used technique is to make use of reflected light. Light enters the pavilion of a gemstone at a 45ยบ angle and the spectroscope should be placed at the same angle on the other side.

The light will travel its longest possible path in this way, picking up the most color.

To prevent the background on which the stone lays from causing false readings, one should use a black nonreflective underground, such as a small piece of black velvet.

Another technique is to position the gemstone and the light source (penlight) in one hand in such a way that the light source illuminates the gem from behind, thus viewing the gemstone in transmitted light.

There are nice spectroscope stands (some with built-in illumination) on the market, but gaining some experience eliminates the need for them.

For the new user, it is recommended to start with a gemstone that produces a clear absorption spectrum, such as synthetic ruby.

TECHNOCRACY PVT. LTD.

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