I hope you are not speaking about the 2 aquas i’ve showed here. if you come once to Brasil I’ll introduce you to a good friend of mine who happens to be one of the owners of the pit from where these gems were extracted.
It’s quite easy to detect irradiated beryls, aqua, & very often around here, imperial topaz from Ouro Preto. You just leave them in the sun for 24 hours.
Same thing for emeralds: just ask your dealer if you can leave the gems in aceton for 24 hours.
Primitive but efficient techniques. You’ll never see the scammer again.