Purging Stone

Purging stones are a consumable in game item used to remove curses from the player.

Availability
Purging stones can be bought with reasonable ease early in the game. There are two vendors close to Firelink Shrine that sell them. The first is a priest in the bell tower of the Undead Parish, who appears after the fight with the Belfry Gargoyles. The early appearance of this character would make him the preferable choice, as he sells them for 3000 souls per stone. The second option is an undead vendor at the end of the long sewer tunnel connecting the Firelink Shrine/Undead Berg area to the Depths. She is located behind a barred gate at the very end of the waterway. In addition to several types of moss, she will sell purging stones for 6000 a piece.

General Information
Purging stones are a new item to Dark Souls. Unlike the red and purple moss used to cure poison and bleeding, which had counterparts in Demon's Souls, purging stones and curses are a (somewhat) new mechanic.

Curses, when inflicted, will immediately kill the character. Upon revival players will notice that only half of their life bar is filled. The lack of HP with the curse status is comparable to being in soul form in Demon's Souls, with HP being reduced to half of it's current max. Unlike Demon's souls, reversing your hollowing or killing a boss will not lift the curse status.