Hey, from what I remember, the Purification Stone can’t always be removed directly from your inventory—sometimes you need to use it first or move it to another section. It’s also worth checking the item description or game settings, as it’s sometimes explained there. I ran into a similar issue before and while searching for solutions I came across Court Filing Process, which had some really clear explanations about handling systems and steps. You might also try restarting the game or checking for updates. Let us know if that works