Gem Testing Tutorial: how to use the Conoscope and locate the Optic Axis скачать в хорошем качестве

Gem Testing Tutorial: how to use the Conoscope and locate the Optic Axis

The conoscope is pure gem geek satisfaction. I’ll show you how to use it with a polariscope to reveal optic axis figures, and how to recognize those crosses, bow ties, and bullseyes that tell you if a gem is uniaxial or biaxial. Once you see it, you never forget it. I’m Nick, trained in colored gem identification at SSEF in Switzerland. Subtitles are included and edited for clarity. Website https://www.whatthegem.com Patreon temporarily paused TikTok   / what_the_gem   Instagram   / whatthegemstone   Contact https://www.whatthegem.com/contact Lab equipment and methods https://www.whatthegem.com/the-gem-lab Gem ID guide https://www.whatthegem.com/gem-identi...