Other publications

Guillaume Zuber

• Blumentritt F., Zuber G., Caplan C., Notari F. (2025). Diffusion-induced blue spinel-like layer on natural sapphire. Gems & Gemology, Gem News International. 61(2), pp. 221-223.
• Blumentritt, F., Zuber G., Caplan C., Notari F. (2025) 24.21ct photochromic yellow sapphire coloured by hole centres. The Journal of Gemmology, 39(5), pp. 435-437.
• Blumentritt, F., Notari, F., Becouze, M., Vigier, M., Zuber, G., Caplan, C., Fritsch, E. (2024). Gem-quality Green Cryptocrystalline Muscovite (Fuchsite) from Ya'an Prefecture, Sichuan, China. The Journal of Gemmology, 39(1), pp 66-76.
• Zuber, G. (2017) Jade et traitements, Diplôme Universitaire de Gemmologie, Lyon.

Clara Allirol-Mouton

• Allirol-Mouton C., Notari F., Blumentritt F. (2025) A remarkable "Ottu" sapphire in the laboratory. Gemmes, 6, pp 10-21.
• Blumentritt, F., Allirol-Mouton, C., Caplan, C., Notari, F., Zanettin Barbin, F., Notari, T. (2024). Béryl vert de 90.4 carats. Gemmes, 3(1), pp. 62.
• Blumentritt, F., Allirol-Mouton, C., Caplan, C., Notari, F., Zanettin Barbin, F., Notari, T. (2024). Sautoir en Corallium japonicum. Gemmes, 3(1), pp. 62.
• Blumentritt, F., Allirol-Mouton, C., Caplan, C., Notari, F., Zanettin Barbin, F., Notari, T. (2024). Inclusion de grenat pyrope-almandin orange dans un diamant. Gemmes, 3(1), pp. 63.

Antoine géraud

• Blumentritt, F., Notari, F., Géraud, A., Stephann, R., Caplan, C. (2024). Un diamant synthétique incolore de Ø 0,50 mm dans un lot de mêlés. Gemmes, 4, pp. 73-74.

LOLA JOUGLA

• Jougla L., Blumentritt F., Notari F. (2025) Massive Cryptocrystalline Vesuvianite-Grossular from Eastern Afghanistan; Gemmological and Geological Considerations. The Journal of Gemmology, 39(7), 2025, pp. 672–687. switzerland [at] ggtl-lab.org (PDF on demand).