Memorial bracelets memorializing prisoners of war, missing in action, killed in action, and those who died of wounds or injuries sustained in a combat theater are authorized.
I've known those pieces ever since I was about 16 or 17; I also at that time was taken to meet Charles Ives whom I got to know fairly well. He was the one who wrote a recommendation for me to get into college.
We know for a fact that the body is able to process colloidal silver quite well if it is made correctly and the dosage levels and concentrations are not too high.

