As I tried to make clear earlier, I simply do not have the time for further debate and I have been down this road and over these facts before.
I don't know where you get your figure of an average silver particle being 15 nanometers. The diameter of a silver ion is 0.252 nanometers (converting from the radius of silver ions coming in at 1.26 Angstroms*). 15 nanometers is not the size of the very large majority of the silver particles of either Utopia-Silver or Mesosilver, whose particles have been measured to be as small as 0.65 nanometers and below in diameter and which average far less than 15 nanometers in diameter - thus putting to rest your contention that it is impossible to produce particles that small, since they have done exactly that. 0.65 nanometer is not at all "essentially the same size as a silver atom". A particle with a diameter near the size of 0.65 would actually hold a cluster of several silver atoms.
Keep up the research. The truth is out there Scully, I assure you. Been there and done that.