Apparently, the diffusion coefficient is delicate to impurities or structural challenges during the crystal, but that remains to be quantified. For our rough estimates of enough time at temperature required to clear away the hydrogen from our samples, the hydrogen diffusion coefficient picked is given by Belonoshko et al. (2004), https://www.tumblr.com/thegemjournal/759696203354128384/understanding-the-unique-characteristics-of-yellow?source=share