Stone of Tear

From Wotpedia

The Stone of Tear was a place where the ancient sword called Callandor, resided. That is until Rand al'thor went to retreive it in the third book by Robert Jorden. There is also a legend saying that the stone of tear would fall only to the dragon. And once the Dragon took his sword, the Stone of Tear had fallen, qand his flag was waving upon the stone the next morning.