"Crystal clarity" means having a very clear and precise understanding or explanation of something, similar to when you can see through a crystal without any fog or distortion. Full definition
As with all religious belief, people can see the mistake with crystal clarity when it's being made by someone else. (politics.co.uk)
The 1080p full - HD means crystal clarity all the way. (geekwrapped.com)
Visual branding tends to work best when it conveys one single message with crystal clarity — and you can still do that in a way that's engaging and interesting to look at. (careerladder.sg)