This blank has a yellow and black checkerboard pattern. The pattern will remain in the same proportions as you turn the blank down. I.E., they will get smaller as the diameter is reduced.
These blanks require 2 or more pours of resin and we have noticed there are some small voids between the layers. This can often be cleaned up with some CA glue to fill in those voids, but the voids should be expected and this is why the blanks are being sold at a discount as seconds.