Long story short, the gem was dropped on a stone tile floor and cracked pretty badly. The gem was cracked on the inside before but now a few of those cracks run to the surface and a little chip can now freely move in and out. There are no parts missing, if the chip is put back, it fits perfectly and you can barely see the scratches from the cracks when reflected against a light.
The gem has sentimental value and I'm looking to fix it. I was thinking, perhaps the resin that they use for fixing windshields would work? I don't have a method to create a vacuum but perhaps if I just submerge the gem in the resin and leave it be for a few days, would the resin seep into the cracks anyway?
Afterwards I would extract the gem from the resin and place it in direct sunlight for the curing. I would expect the resin that seeped in to stay in during the curing and the rest would just drop off. After curing I might go back in with more of the resin and a brush to fill any remaining surface scratches and then even them out with a razor blade after those cure too.
Anyway, I've never done anything like this before so its just all in my head as of now, does anyone know if it would work?