They're not shards they're orbs. And as for the whereabouts you will find them where the 7 sages died. (marta, david, lord high priest, alistair, rylus, abbott fransisco, and i forget the other 1) But just use the echo flute around where they died and you'll find them.
Good bye everyone, it's been fun!
Special thanks to ED_, superman4u, and Cross Stinger
Credit for the Siggy goes to shadow slayer