Oh, beautiful Adelaide, would you mind letting me take a closer look at that shard? I have a feeling I've seen it somewhere before. Perhaps in Sandro's book, which I read when I was just beginning my necromantic journey? It looks very similar to that stone. And the book mentioned that these stones have a special property – they attract each other. But besides that, they enhance the magical abilities of the owner.
If I'm not mistaken, you're incredibly lucky!