Hi Piwaket, welcome back to Siege. Depending on when you left, your best bet for tracking down your stones (if they were found and saved at your idoc) is Gilfane. They have a website...
Gilfane so just ask there and Becca or Sara Dale will let you test the unnamed stones they've got (they have named stones too so that'll be easy). If you don't find your stones at Gilfane, you are welcome to test the few I have, all unnamed. The best place to contact me is on the Siege Perilous discord (address below) or go into general chat and give me a shout in game. Good luck!