Gem Testing Tutorial: how to use the Refractometer and measure the Refractive Index of gems
Автор: what the gem
Загружено: 2025-09-23
Просмотров: 570
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 colored gem identification at SSEF in Switzerland. Subtitles are included and edited for clarity.
Website https://www.whatthegem.com
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