The limeade ox I have pictured above is the second closest to a perfect marble I have ever owned in over 40 years., I've looked at it over and over again W a 10x loupe, nothing. It's .751" and not a dimple or scratch on it, the best example is what I go for now, I had it rated a 9.9 next to it in rating is a purple Popeye I got 38 years back.