It appears to me that some have a mistaken view of what a COLLOID is when discussing what Ionic &
Colloidal Silver actually is. I had three semesters of chemistry in college in getting my Electrical Engineering degree, so I do have some actual knowledge about these issues.
A COLLOID is ANYTHING suspended within a dispersing medium, that is it won't SETTLE out & show up at the bottom of the storage container. It doesn't matter whether the COLLOID is an ION or a NON-ION, either one is a COLLOID so long as it meets the condition of non-settlement within the dispersing medium.
An ION is the smallest size PARTICLE (COLLOID) of any element within a dispersing medium, it is a single atom missing one negatively charged electron in it's outer orbital shell. The next larger sized COLLOID is a single atom of that same element, one that is not missing an electron in it's outer orbital shell but which also remains suspended within the dispersing medium.
The point I'm presenting here is that an individual atomic ion or an individual non-ionic atom are both COLLOIDS so long as they remain suspended within the dispersing medium, it's what happens to IONIC COLLOIDS vs. what can happen to NON-IONIC COLLOIDS that creates differences that can lead to color variations within the dispersing fluid.
Within a dispersing fluid, ionized atoms repel one another & thus can never combine with each other & become bigger COLLOIDAL non-ionic atoms (nano-particles). Non-ionic atoms will only remain separate from one another for so long as the dispersing fluid does not become too crowded with other non-ionic atoms.
The most visual sign of crowding of non-ionic atoms occurs when the dispersing medium changes colors from clear to a pale yellow for silver, or if you use red laser light you will be able to detect such crowding sooner while they are still smaller particles before the dispersing fluid turns yellow, this is the Tyndall Effect which is light scattering by particles in very fine suspension, also called AGGLOMERATION of the COLLOID because there is too little dispersing fluid to keep the once individually suspended NON-IONIC silver atoms separated from one another.
When a COLLOID in suspension gets too big, it will fall out of suspension & settle to the bottom of the storage container & thus is no longer a COLLOID.
For the most efficient bio-availability the COLLOID of nano-particles must be as small as it can possibly be made, that is before you can detect any color within the dispersing fluid. The IONIC colloids will never have any effect on color because these colloids are too small to observe the Tyndall Effect.