New tests question the purity of Apple's sapphire used in its iPhone cameras

UPDATE 1:30 p.m. ET: An older version of this post indicated that Apple might be using a sapphire laminate over plain glass, but that is false. A spokesperson from Apple clarified that "the iPhone 7 camera lens is sapphire, and under proper testing conditions achieves the hardness and purity results expected from sapphire." This post has also been updated with comment from JerryRigEverything. 

A new video posted by YouTube technology reviewer JerryRigEverything calls into question Apple's use of pure sapphire crystal in the camera lens of its iPhone.