Detect Dragonshard

For the duration, you know if there are dragonshards 30 feet of you, as well as precisely where they are located.
It does not tell you what kind of shard it is or what size. The spell cannot detect residuum.

The spell can penetrate most barriers, but it is blocked by 1 foot of stone, 1 inch of common metal, a thin sheet of lead, or 3 feet of wood or dirt.