The document describes a prism spectroscope and its uses. It can be used to analyze gemstones and other materials by separating visible light into a spectrum. When used with gemstones, it allows identification of stones such as distinguishing ruby from pink sapphire based on their absorption spectra. It works by dispersing light through a series of prisms. Proper usage, such as using reflected light at a 45 degree angle and a black background, is important for obtaining clear results. It is most suitable for analyzing materials using visible or infrared light.

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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.
TECHNOLOGIES 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 45º
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.
TECHNOLOGIES PVT. LTD.

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