Scratches at a Level 6 With Deeper Grooves at a Level 7

Something Zac from JerryRigEverything says in nearly every YouTube Video. He is known for literally destroying phones for a living with various durability tests. Refers to the Moh's Scale of Hardness, and how strong certain cell phone glass is.

Most cell phone glass scratches at a level 6 on the Moh's Scale of Hardness with more scratches being visible with a level 7 'pick'.

"Glass is glass, and scratches at a level 6 with deeper grooves at a level 7".

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