On: Why Your Next iPhone Won't Be Ceramic

[jaggederest]

That doesn't make sense, tungsten carbide is harder than sapphire. Carbide tools should scratch it no problem.

[DannyBee → jaggederest]

It varies.

You are right that some are harder than pure sapphire, but it depends on the exact grade, etc, and depends on what you do to the sapphire.

Suffice to say: I have tested saw blades i have against sapphire screened watches i have. They do not scratch.

¯\_(ツ)_/¯