The Journal of Gemmology - Volume 38 No. 5 2023

Chemical data to accompany the article:

Krzemnicki, M.S., Leuenberger, A. & Balmer, W.A. 2023. Cobalt-bearing blue spinel from Lukande, near Mahenge, Tanzania. Journal of Gemmology, 38(5), 2023, 474–493, https://doi.org/10.15506/JoG.2023.38.5.474.

Krzemnicki-GemTOF_data.xlsx