Sentient Artifacts discussion

[Firetaffer]

I haven't seen a thread about this, oddly enough, since the eye and the heart are so intriguing. Do you think we will see a return of these odd talking stones? I've been doing a little research and not much seems to be known about them other than they are stones that can talk. That's not to say they aren't interesting, but according to some sources they seem to say that Garrett is one of the few people who can actually hear them talk. Does this have anything to do with his eye being lost to one of them, or perhaps the eye saw something in Garrett? What are the nature of these rocks, it doesn't seem to be elaborated enough. For exactly how long have they been sentient, maybe a sacrifice was needed for one of these gems to have sentience, that of the sacrifice. If they were sentient to start off with they must have thousands of years of knowledge behind them.