Seemingly, the diffusion coefficient is delicate to impurities or structural difficulties in the crystal, but that remains to be quantified. For our rough estimates of some time at temperature necessary to take away the hydrogen from our samples, the hydrogen diffusion coefficient decided on is the fact offered by Belonoshko https://www.tumblr.com/thegemjournal/759696203354128384/understanding-the-unique-characteristics-of-yellow?source=share