Evidently, the diffusion coefficient is delicate to impurities or structural problems in the crystal, but That is still to be quantified. For our tough estimates of the time at temperature needed to get rid of the hydrogen from our samples, the hydrogen diffusion coefficient selected is the fact provided by https://www.tumblr.com/thegemjournal/759696203354128384/understanding-the-unique-characteristics-of-yellow?source=share