The solubility of Gold nano-particles in water Ep.3 The nano-scale gold particles are soluble in water and deeply red colored. 2012P Figure 12.46 The solutions of colloidal gold nanoparticles made by Michael Faraday in the 1850s.(In the institute of Great Britain's Faraday Museum in LondonThe solubility of Gold nano-particles in water Ep.3 :The nano-scale gold particles are soluble in water and deeply red colored. Figure 12.46 The solutions of colloidal gold nanoparticles made by Michael Faraday in the 1850s. (In the institute of Great Britain’s Faraday Museum in London )