How to get this quest
You get this quest after obtaining any record crystal (marked by a sparkling spot on the ground) in the Forest of Runes eastern cavern.
Finding the crystals
The quest is automatically completed when you find all the record crystals. Most of them are trivial to find, but one of them is hidden. There is an invisible path under this spot.
At the end of this path, a hole in the ground allows to enter a small area where the hidden crystal is located.
Completing the quest makes all the record crystals into a unique one. This crystal can either be used to listen any of the found chronicles or be sold for 2500 G.