Freshwater Pearls, Knives, Hippo Roller How Do They Do It? : Season 15 Episode 17
Discovery 51m
Aired: December 19th, 2017 @ 10:00 PM EST on Discovery
How do they grow America's only freshwater pearls in Tennessee? How are the world's sharpest knives made, and how do they forge the world's sharpest knives?
