this part wasn’t in the anime so i never knew how he came to get the mask but apparently he just fucking bought it at an art gallery because he has horrible taste and then hung the ugly thing in his house to remind him of his dead wife
So we have two people to blame for the mess Dio makes with that mask.
Kars for making the damn thing, and George Joestar for impulse buying it.
George Joestar’s shit taste in art plagued his bloodline for literally over a century nice job shithead