Crimson WatchstoneThe memories and emotions of countless victims of the Elder, locked in stone for eternity.Socket this into a Citadel on your Atlas to increase the Tier of Maps and reveal hidden Maps in that Citadel's Region. You can only socket one Crimson, Viridian, Cobalt or Golden Watchstone into each Citadel.
Acquisition Not in game Drop level: 1Metadata Item class: Watchstone Metadata ID: Metadata/Items/AtlasUpgrades/AtlasRegionUpgrade1_8
Crimson Watchstone are tied to the region of the Atlas. Each region only drop one Crimson Watchstone. The first watchstone requires to follow the questline Chasing a Dream, The Elderslayers and The Crusader to spawn Baran in the corner region of the Atlas (before the change in 3.16). And the second watchstone requires to spawn Baran in a new region, with that region has +1 watchstone socketed, and so on. The fifth to eighth Crimson Watchstones requires to socket 4 watchstones in a new region in order to spawn Baran and drop Crimson Watchstone.
The number of atlas regions has been reduced from 8 to 4. Thus the number of Crimson Watchstones is also reduced. The corresponding questline is also modified as there is no "corner" region of the atlas