There are 3 soul shards to get in the game.  They are not easy to get.
Want to have them now?  Well, ok...here you go.

This is the Soul Shard of Solarus.  Once placed, hold F on it and you will get the 2 Hour buff.  Great for when you go out boss hunting.  Be prapared, granny always said.
 
- Increases Sun Resistance by 50, Primary Melee Attack Speed by 5%[,] and Physical Power by 10.