help me

How do I use my stones?

I wanna know it too(

It will be used when your weapon or armor on its max upgrade.. Like for example having Magic Weapon. Max upgrade is +40 you need the stones to upgrade it to +41. Guides is here (https://game.nanoo.so/darksword/forum/455641?code=5b709c13b17d29f4369768de22e5ed68)

Thanks