Talk:Earthbending/@comment-110.55.5.167-20110320142719/@comment-97.89.141.215-20110720181752

I think it has to do with which tribe/kingdom the bender was born into. Crystal is more hardened, and rock-like...like coal it is found through mining so it's more naturally earth; sand is very weathered earth and therefore shifty...like water. Sand-benders can do it because that's how they mastered earth-bending. Toph learned the old-fashioned way from badgermoles.