Gem-A Live: Man-made Stones Explained
![](https://i.ytimg.com/vi/0q-3OCP79-U/mqdefault.jpg)
1:03:46
Gem-A Live: Laser Drilled Diamonds
![](https://i.ytimg.com/vi/1mxbxa36ppA/mqdefault.jpg)
1:11:00
Gem-A Live: Fluorescence
![](https://i.ytimg.com/vi/tjN1yfKIFz0/mqdefault.jpg)
1:11:32
Gem-A Live: Understanding Gemstone Species and Varieties
![](https://i.ytimg.com/vi/Xg1V78SQP0Q/mqdefault.jpg)
51:31
Gem-A Live: Introduction to Diamonds
![](https://i.ytimg.com/vi/isWpYh7zLLg/mqdefault.jpg)
16:00
Unboxing Exotic Lab-Made Gemstones | Laser Rubies & More!
![](https://i.ytimg.com/vi/VAbxAtEJ_LI/mqdefault.jpg)
46:48
Three Precious Gems: Rubies, Emeralds, Sapphires
![](https://i.ytimg.com/vi/-SgV2mHWgG4/mqdefault.jpg)
32:12
Wolfgang Grupp explodiert auf unserem Event
![](https://i.ytimg.com/vi/4S2EaocDG0k/mqdefault.jpg)
53:11