These were just added to the PTS server, they are crystals that you can buy that boost your stats. There will also be super rare ones that you can get from raids.
Mage Crystals
http://imageshack.us/f/339/mager2setbonuses.jpg/
Cleric Crystals
http://i1015.photobucket.com/albums/...ricbonuses.jpg
Warrior Crystals
http://img34.imageshack.us/img34/662...iorsynergy.jpg
Rouge Crystals
http://img801.imageshack.us/img801/3...uecrystals.jpg
They can only be used if you have HK raid gear, notice some of them say you need 4/4 raid piece to use the crystal.