Apparently, the diffusion coefficient is sensitive to impurities or structural problems in the crystal, but That is still to get quantified. For our tough estimates of the time at temperature required to take out the hydrogen from our samples, the hydrogen diffusion coefficient picked is the fact offered by Belonoshko https://www.tumblr.com/thegemjournal/759696203354128384/understanding-the-unique-characteristics-of-yellow?source=share