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Dichroic Mirror

RPFO79

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Find out more about this product

This is not just a very useful tool, but one that provides hours of endless fun. It really is one of my favourites. The Dichroscope is a tool that helps Gem Collectors in discovering if the gem they are looking at is a singly refractive gem or a doubly refractive gem.

When light enters a gemstone depending on its properties, the light will either travel as a single ray of light within the gem (single refractive gems) or will divide in two (double refractive gems).

But why do we need to know if a gem is splitting light in two? Well it is one of the best ways of identifying certain similar looking gems. For example Garnet is always a single refractive gem, whereas Ruby is doubly refractive. As only a few gemstones such as Diamond, Garnet and Spinel, along with many synthetics such as CZ and glass are singly refractive.

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