It isn't a shimmering glass ball that will shatter if grasped firmly.
It's a darkly lustrous ball of mud which only firms up when one squeezes it.
It's form may be uneven, but its the form of one's own fingers.
Not to make it a beautiful gem someday.
But to make it the world's most beautiful ball of mud.
From episode 10, time 0:00 to 0:45.