Here are some articles that will show you how to make Colloidal Gold and Colloidal Silver (Gold and Silver Nanoparticles) for home use.
Easy Method To Make Gold Nanoparticles From Gold Chloride
Here are some articles that will show you how to make Colloidal Gold and Colloidal Silver (Gold and Silver Nanoparticles) for home use.
Easy Method To Make Gold Nanoparticles From Gold Chloride