Ohhhhhhh 
All I can say is that it’s a pretty (and shiny!) one 
I don’t consider myself to be an expert with crystals- even looking at the Crystal ID chart, I wouldn’t place money on my guess haha. I’m going to step back and let the talented crystal experts of the forum work their magick. I am sure they will have some great guesses for you 
That being said, you might be able to run the pictures through a Crystal Identifier App and see what it says- here’s a link to Google Lens that might help give you an idea 
Whatever it is, it looks neat! May your new crystal serve you well @Assyla555 
Blessed be!