Well it's hard to define what a dab is... But all I can say that a dab is basically both of your arms pointing one way while the head is pointed the other way.
Not to sound rude. But what I mean is, For example. Rubies can't change their gem. Even if it is different lifeform of gem. Higher class gems. Such as Diamonds,Spinels and stuff. Can change the location of their gem. Just not the shape