One of the strongest rocks in the world is one that you might not expect, and the story of how it formed deep under the earth is intense!


Love SciShow Kids and want to help support it? Become a patron on Patreon:
  / scishowkids  

Looking for SciShow elsewhere on the internet?
Facebook:   / scishow  
Twitter:   / scishow  
Tumblr:   / scishow  
Instagram:   / thescishow  

SOURCES:

https://www.livescience.com/32266how...
https://www.smithsonianmag.com/scienc...
https://geology.com/minerals/mohshar...