Earth rune

Locations

 * In Chapter II, received from Zoltan as reward for Memory of a Blade.
 * In Chapter III, received from Andrew Gablodda as one of three possible rewards.
 * In Chapter IV:
 * found on the corpse west of the ruined bridge outside Murky Waters.
 * received as one of three possible rewards for Old Habits Die Hard.
 * sold by the Blacksmith's son
 * In Chapter V:
 * Sold by the fence.
 * found on the corpse near the campfire in the Old manor swamp area.
 * found inside the Old Manor, in the room where Geralt fights two greater brothers. Re-enter the catacombs after the fight with Javed. In the trunk against the far wall.