In the chapter "Decisions", where Lanfear visits Rand in the stone right before the Trolloc attack, they talk about Callandor and she mentions two others that only a man can use. We know that one of those has to be the CK, right? Do we know what the other one is?

Update: I checked encyclopaedia-wot and it doesn't have a reference for the second sa'angreal, saying that there could be another one besides the CK, or "giant statue".