Practically loupe clean! This is much better than the above pictures indicate and the third picture shows very slightly how the cross Axis shift depending on orientation when you look at the color on the left of the picture vs. the right. The actual change is much more dramatic as when comparing the first and second pictures above! Awesome LARGE chunky crystal section! This is one of our best pieces and we only have a few pieces of similar caliber material available. It truly has to be seen to be fully appreciated!