pearl disappear from his chest , cant buy dark stone 5 6 from the tow sisters

[IITHEJAPANFANII]

Smithing-Stone Miner's Bell Bearings disappeared from his chest , cant buy dark stone 5 6 from the tow sisters

[Sparhawk 59]

You got it from here?
Unlocking the ability to purchase Smithing Stones 5 and 6 requires players to obtain the Smithing-Stone Miner's Bell Bearing 3. This key item can be found inside a chest under the Zamor Ruins, a location found

try checking inventory and chest see if its their if not could be a corrupt save and nothing can be done other than go to NG+. other solution is to get the somber smithing stones level a weapon up then ask for the weapons that use smithing stones to be levelled up as well past the missing ones he cant buy