Okay, so I received a verbal report from the AGL. They told me that the emerald has minor amounts of modern enhancement. When I enquired more about this, they said it means it is more than just oil in the emerald: that it has a minor amount of polymer or resin. They couldn’t tell me much more, other than they think it’s pretty standard at least in that they see it all the time. I asked if it could deteriorate over time and they said no, as long as I looked after the stone, didn’t expose it to strong heat, etc, it should be fine. Thoughts? Should I consider returning the emerald? I was sold it on the basis it was insignificant oil only. I thought enhancements other than oil were bad, but perhaps some modern treatments are okay? Would that include polymer or resin?