The Mohs Scale of Hardness Explained 

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I like that you can test the hardness with other minerals

who is here cause of teacher

Figuring out the hardness score is just like armor class in D&D

I found a mineral which is awesome and very lustrous. It was certified by gemologist as silica glass. The hardness value was 4 according to his certificate. But video says hardness value is 5 to 5.5..is that certificate correct?

Isn't moissanite the second hardest?

The first time you have a good idea

What's harder Quartz or Quartzite?

Is it a Sin curve?

• Diamond: 10. • Obsidian (fiction): 12. • Bedrock from Minecraft: 18000.

Where is agate on the scale ?

Is there a scale for toughness and strength?

nice

🙏 thx

Lo dices con una voz😍😍🥰🥰😘🤩🤩🤪🤪

Cool

if your thfats itfs no englosolicd

Hol

Lol

cool beans

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One of the necessary useless facts of school