This booklet is a very brief guide to some of the instruments used by the gemmologist. It includes some practical hints and tips that will prove useful. It looks in particular at lighting methods for the microscope and how a refractometer works.

This booklet is a very brief guide to some of the instruments used by the gemmologist. It includes some practical hints and tips that will prove useful. It looks in particular at lighting methods for the microscope and how a refractometer works.
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