From the design documents that are part of the DLC bonus:
List of Star Stones and Blood Stones
Cyseal
-Star Stone on ground near exit to Luculla Forest
-Star Stone in the crime scene in the tavern
-Star Stone dropped by Braccus on death
-Blood Stone owned by Evelyn
Black Cove
-Blood Stone in the Pontius Pirate fight
Luculla
-Star Stone in the Immaculate Trial
-Star Stone on Mangoth if he hasn稚 sacrificed (becomes bloodstone if he has sacrificed)
-Blood Stone in the Maradino Lair
-Two Blood Stones in the Loic Cellar
-Blood Stone when destroying the totem in the goblin village.
Hiberheim
-Star Stone in the Boreas treasure room
-Blood Stone when destroying the Iron Maiden in the prison
Dark Forest
-Star Stone in the tomb at the end of the knight痴 tomb
-Star Stone buried in the source temple near the teleportation mirror
-Blood Stone near Cassandra痴 actual corpse in the Temple of the Dead
