Vincent had many random things inside his Obsidian Treasure Box.
A small part of them were items that he bought and the other part were things that Tara and Rem contributed.
He wasn't able to remember all the magical effects of his items but he can easily recall those that are important for survival or combat.
One of the items that he has were the Enchanted Bloodstones. This is an item he got when he was still working as an Appraiser at the Guardian Auction House.
He has quite a few of these thanks to Therese. This was supposedly an item that only the royal family wanted after all.
Back then, when he appraised the Bloodstones brought by the members of the Blood Mist Sect, his Appraisal skill was only at an intermediate level.
It only has a Corruption attribute and it was just described as a special stone that can corrupt or strengthen a magic artifact depending on the item's configuration.
