Are the irradiations getting better, because those do look better than the average ones you see at the maul?
Yes, but another factor at play is the quality of irradiated diamonds = which can vary greatly based on the quality of the stone they started with.
If Crud is going into the reactor, different colored crud coming out.
Since most of the places selling irradiated stones are more prone to carry cruddy goods, that what most of them carry.
We happen to know of one dealer that takes greater chances by irradiating stones of higher colors. clarity, and better cut.
The reason it's a gamble is that sometimes the results are not nearly as nice......