These scratches can barely be seen by the eye and even though only when a bright light is shone on them like in the photo. As you can see in the photo, the sensor covers have scratches on them? I thought this was also made of sapphire so as to not affect the reading. Am I incorrect? Is this anything to worry about? EDIT - So I feel stupid now, I wiped the back with my finger and these are actually small strands from the microfibres cloth, not scratches at all!