Tip of the day - Protect your slabs cheaply
I started doing this .. umm I will not date myself . But you know when you buy new electronics and that clear plastic you peel from the screen. I cut it up in rounds and put it on my slabs. They then avoid scrapes and abrasions. Cheap and easy.
***BTW any and all royalties by PCGS and NGC can be paid to me with free grading fees when you create and market said invention.