Mie scattering centers comprised of high-refractive-index Cu2O are prepared using a rapid one-step electrodeposition procedure. The deposition of cubic nanoparticles is facilitated by a high-pH precursor solution, which allows for low Cu2O nucleation density and large grain size. The scattering resonant frequency and peak width are easily tuned across the visible spectrum by controlling the pH of the electrochemical solution and the duration and rate of deposition. (C) 2012 The Electrochemical Society. [DOI:10.1149/2.069212jes] All rights reserved.