I don't have experience with using them, but I know de-bonders exist. What I don't know is if they will simply loosen the glue or if it will remove all residue from your stones leaving them clean like new.

https://www.amazon.com/Bob-Smith-Industries-BSI-161-Debonder/dp/B0000DD1QS/ref=asc_df_B0000DD1QS/?tag=hyprod-20&linkCode=df0&hvadid=198100706044&hvpos=&hvnetw=g&hvrand=12324189381268496783&hvpone=&hvptwo=&hvqmt=&hvdev=m&hvdvcmdl=&hvlocint=&hvlocphy=9028770&hvtargid=pla-379516931894&psc=1

That particular brand of products I have always thought very highly of their glues as well as accelerant / curing agent. So if I needed a debonder that is where I would start

You need CA Debonder

https://www.amazon.com/Bob-Smith-Industries-BSI-161-Debonder/dp/B0000DD1QS