Evidently, the diffusion coefficient is delicate to impurities or structural concerns inside the crystal, but that remains to get quantified. For our rough estimates of time at temperature needed to take away the hydrogen from our samples, the hydrogen diffusion coefficient picked out is specified by Belonoshko et al. (2004), https://top10bookmark.com/story17964410/examine-this-report-on-sri-lanka-yellow-sapphire