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UDAWATTE, C.P. , ABEYWEERA, S. , PERERA, L.R.K. , ILLANGASINGHE, S. , WEERASOORIYA, C. , SUTTHIRAT, C. , JAYASINGHE, N. , DHARMARATNE, T. and DIYABALANAGE, S. 2023. Optimized conditions for cobalt diffusion in Sri Lankan colorless topaz and coloration mechanism elucidation through spectro-chemical investigation. Journal of Metals, Materials and Minerals. 33, 1 (Mar. 2023), 73–81. DOI:https://doi.org/10.55713/jmmm.v33i1.1596.