Empty, tarnished sphere. There is no trace of nacre left, but it retains just a hint of bluish sheen. It creates fervour when destroying surrounding objects.
Sold by Candelaria for 
1000 in her shop in Mercy Dreams.
Lore
"It has got to him, brother, the Miracle is within these walls," said the friar, scared.
"Grab that piece of wood and help me block his cell," answered the other friar, younger than him.
And, while they both parted slowly, listening to the screams and banging through the massive wooden door, a small, round object rolled from under it.