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SPECTROSCOPE – PART 1

Gemology is by definition the study or the science of precious stones. One knows approximately 4000 minerals produced by the terrestrial body, among which less than 100 produce specimens considered as precious stones. To be a gem, a mineral must have three fundamental virtues.Beauty, durability and scarcity.

SPECTROSCOPE

The spectroscope concerns an extremely simple method which allow the identification of all the stones; rough or polished not being able to be seen with the refractometer and which even makes it possible to distinguish certain synthetic or glasses.

This method makes it possible to analyse the nature of the dye of the stone. The way in which the spectroscope analyses the various wavelengths of the light is in theory very simple;  that depends on the different degree of refraction to which its subjected various rays of each color(wavelength) when they are propagated through a prism of glass or another transparent substance.  After having passed through a prism, a narrow parallel beam of white light is spread out in a ribbon with the colors of the rainbow, the visible spectrum.

Step by Step Spectroscope Instructions

SPECTROSCOPE

The spectroscope is used to analyze light passing through a stone. White light is a combination of all the colors of the visible spectrum: red, orange, yellow, green, blue, indigo, and violet. This is the rainbow we see when light travels through a prism. When white light travels though a stone, one or more of the wavelengths that produce color are absorbed by the gem. The colors that are NOT absorbed are the colors seen when we look at the stone.

THE SOURCE:

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CUT GEM

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