Gloomstone
Gives a hint when Rose is close to a secret.
How to obtain
Open the chest marked on the map to obtain Gloomstone.
Acquisition location
Master's Quarters · Sanctuary of Solitude
Usage tips
While exploring, watch for cues near hidden elements, then inspect nearby walls and terrain; the cue itself will not open a passage for you.
Backstory
This ring once belonged to a quarryman convinced the stone whispered dire warnings.