Microwaves make metals spark, melt, burn, and god knows what. I can't
believe that a microwave won't significantly alter the structure of any
silver in the solution. Not worth it.

Also, you should throw your microwave away. There are plenty of studies
that have been done that demonstrate a significant change in nutrient
value, and one that measured a hormonal response to foods heated in
microwaves that was similar to the body in distress, reacting to a
toxin.