Background: In the earlier research publications of the author he has identified the presence of nanoparticles (NPs) of the drug material in all the higher dilutions of homeopathic drugs; viz, Lycopodium and Ferrummetallicum. Method: The present study isdone with the help of HRTEM (High Resolution Transmission Electron Microscope) and EDS (Energy Dispersive Spectroscopy). Result and Conclusion: 1. The analysis of homeopathic drug Aur met (Gold) shows the presence of nanoparticles of Gold in all the potencies studied, i.e. 6c, 30c, 200c, 1000c, 10000c, 50000c and 100000c 2. Nanoparticles of Aur met were found mostly in Quantum Dots scale in all the dilutions. 3. The study proves that homeopathy is really a material science and not merely an energy medicine or placebo therapy as considered earlier.