Apparently, the diffusion coefficient is sensitive to impurities or structural problems while in the crystal, but that remains being quantified. For our rough estimates of enough time at temperature necessary to clear away the hydrogen from our samples, the hydrogen diffusion coefficient picked out is the fact given by Belonoshko https://www.tumblr.com/thegemjournal/759696203354128384/understanding-the-unique-characteristics-of-yellow?source=share