In this second episode of Watch and Learn, we will discuss the 3 types of crystals you find on today's wristwatches, discuss the pluses and minuses of both, and give a water droplet demonstration that can help you tell the difference between mineral and sapphire crystals.

Links to items discussed in the video:
Poly Watch for cleaning plastic crystals: http://www.polywatch.de/en/index.php

Some diamond suspension products used for polishing mineral and sapphire crystals:
https://www.dmtsharp.com/sharpeners/s...

Aftermarket watch crystals and presses:
http://www.esslinger.com/watch-crystals/
http://www.ofrei.com/page809.html

https://longislandwatch.com/