Spectrophotometric measurements of faceted rubies: critical review of an immersion technique. Published in Journal of Gemmology, 1986.
Author(s): G. Bosshart, K. Schmetzer
Glass-like fillings in rubies and sapphires. Published 1986.
Author(s): H.A. Haenni
Corindons traités avec obturations vitreuses. Published 1986.
Author(s): H.A. Haenni
Korunde aus dem Umba-Tal, Tansania. Published in Zeitschrift der Deutschen Gemmologischen Gesellschaft, 1986.
Author(s): H.A. Haenni
Ramaura – une nouvelle synthèse de rubis. Published in Journal Suisse des horlogers et des bijoutiers-orfèvres, 1985.
Author(s): G. Bosshart
Neues vom Smaragd-Vorkommen von Sta. Terezinha de Goais, Goais, Brasilien. Published in Zeitschrift der Deutschen Gemmologischen Gesellschaft, 1983.
Author(s): H.A. Haenni , C.J. Kerez
The influence of the internal structure of pearls on Lauegrams. Published in Journal of Gemmology, 1983.
Author(s): H.A. Haenni
Weitere Untersuchungen an farbwechselnden Edelsteinen. Published in Zeitschrift der Deutschen Gemmologischen Gesellschaft, 1983.
Author(s): H.A. Haenni
Naturally-coloured and treated yellow and orange-brown sapphires. Published in Journal of Gemmology, 1983.
Author(s): K. Schmetzer, G. Bosshart, H.A. Haenni
Un gisement d’émeraudes à Madagascar. Published in Revue A.F.G., 1983.
Author(s): H.A. Haenni