Gem Testing Tutorial: how to use the Refractometer and measure the Refractive Index of gems
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YouTubewhat the gem
Gem Testing Tutorial: how to use the Refractometer and measure the Refractive Index of gems
If I had to pick one tool, this would be it. The refractometer is the backbone of gem identification. In this tutorial I walk you through refractive liquid handling, how to find the real shadow edge, spot readings on cabochons, and why birefringence is such a powerful clue. You will feel confident using it after this. I’m Nick, trained in ...
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