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Mi 9 Durability Test! - Is the Camera Lens Sapphire?

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hackn
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Published on 15 Apr 2019 / In Unboxing

Xiaomi just released their flagship Mi 9 smartphone. A powerful colorful fairly priced device. But is the Mi 9 durable? The only way to find out is with a durability test. We will be scratching the 'sapphire glass' camera lens cover to find out if the sapphire is real or not. I also have a diamond selector tool to test the thermal conductivity of the gemstone like material.

Sapphire crystal is a super premium material. Its hardness level is right next to diamonds on the hardness scale. But when sapphire is not pure... it does not maintain the level of hardness that a pure form would. Sapphire should not start scratching until a level 8 or 9 on Mohs Scale of Hardness.

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