Important note on all our listings: we make no guarantees as to whether these graded books have Newton rings or not. Newton rings are harmless phenomena that sometimes happen when two different types of plastic are next to each other. They are not water or oil damage. Please review all images carefully. We will not accept returns nor provide refunds due to books having Newton Rings. More information can be found at CGC's site where they say:

"The 'rainbow effect' or 'Newton rings' are a normal occurrence when two different plastics (which have different refractive indexes) are placed together. It’s what you sometimes see on a smartphone screen protector or on the edges of an LCD screen. The rainbow effect has been seen in CGC holders since our first-generation holder was introduced nearly 20 years ago. This is a result of the inner sleeve (which holds the book) contacting the hard-plastic outer shell; the two different plastics have different refractive indexes and that sometimes creates a rainbow effect when they come into contact."