Blizzard has taken to the forums to explain various aspects of the Primordial Stones system coming in Patch 10.0.7.
Greetings!We’d like to shed some light on the specifics of the feature surrounding Primordial Stones and how they work.By questing in 10.0.7, you’ll unlock the Zskera Vaults, which is a solo instanced dungeon with some fun puzzles to solve. As you venture through, you’ll acquire the Onyx Annulet ring and a bunch of Primordial Stones that can be socketed into it.