Leelawatanasuk, T., Susawee, N. and Bupparenoo, P. (2021) “Characteristics of Faceted-Quality Ruby from Longido, Tanzania”, Bulletin of Earth Sciences of Thailand, 10(1), pp. 1–7. available at: https://ph01.tci-thaijo.org/index.php/bestjournal/article/view/246735 (accessed: 8 December 2025).