Standard Gemological Instruments and their use
Gemological Instruments and their use
|
S# |
Name of Instrument |
Use |
|
1 |
Polariscope is useful
instrument to determine whether the stone is singly refractive (SR) or Double
refractive (DR) |
|
|
2 |
Refractometer(portable) |
Refractometer is use for
Refractive index (RI) of gemstone. |
|
3 |
Dichroscope is use for Pleochroism
in gemstones. If the gemstone is pleochroic then it should be Double
refractive. |
|
|
4 |
Spectroscope(portable) |
Spectroscope is use for to
determine the spectrum of gemstones. With the help of spectroscope we can
easily separate same colors gemstones for example ruby, red glass and garnet. |
|
5 |
Ultraviolet Lamp (portable) |
Ultraviolet is use for to
determine Fluorescence effect in gemstones. With the help of this instrument
we can separate natural blue sapphire from synthetic blue sapphire. |
|
6 |
Chelsea filter (portable) |
Chelsea filter is use for
separating emerald from its imitations and detecting chromium in green stones
and cobalt in blue stones. |
|
7 |
Microscope / Hand lens(portable) |
Use for study of inclusions in
gemstones. It is one of the most powerful tool in ordinary gemology tools. |
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