Gem Tools: Refractometer

In today's Unboxing, Claire takes us through the amazing tool known as the refractometer! A fascinating use in gem testing, the refractometer is used to find a gemstone's refractive index via the principle of total internal reflection. This is a measure of a gemstone's optical density and can be determined by measuring the critical angle. Claire takes us through everything you need to know to get your refractometer journey started! So sit back, watch and learn, and find out how one of the best gets it done!

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JTV is one of the leading experts on gemstones and is the best source on YouTube for all things gem related. Featuring gem history, the science behind the stones, gemstones in pop culture, and much more, you too can become a gemology expert by immersing yourself in JTV’s channel. Claire is a Fellow of the Gemmological Association of Great Britain and a Graduate Gemologist of the Gemological Institute of America.

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