Petrified Dragon Bone

Petrified Dragon Bones are upgrade materials in Dark Souls II.

Weapons upgraded with Petrified Dragon Bones gain 30% damage per upgrade, and can be upgraded up to +5, for a maximum bonus of 150% damage (2.5x base damage). Overall, it takes a total of 15 petrified dragon bones to fully upgrade a weapon that was created using a boss soul.

Availability

 * In a cell to the right of Straid of Olaphis in The Lost Bastille in a cell that requires the Bastille Key to open.


 * Iron Keep behind the door with fire - fire must be turned off on the right side of the building wall


 * A drop from the Dragon Acolytes in Aldia's Keep


 * Shaded Ruins chest one level above the bonfire and across the gap from the Giant Basilisk


 * Drop from the Giant Basilisk in Shaded Ruins


 * Trading with Dyna and Tillo in exchange for a Small Smooth & Silky Stone.


 * Trading with Dyna and Tillo in exchange for a Petrified Something.


 * May drop from crystal lizards in Brightstone and Dragon Aerie.


 * Purchase from Stone Trader Chloanne for 17,500 Souls (only 3) after receiving the King's Ring.


 * In a chest past the two Giants in Black Gulch


 * On the floor of Aldia's Keep, past the King's Gate and before the Foregarden Bonfire.


 * In the mirror room that the blue phantoms break out.