Spectrophotometric measurements of faceted rubies: critical review of an immersion technique
Spectrophotometric measurements of faceted rubies: critical review of an immersion technique. Published in Journal of Gemmology, 1986. Author(s): G. Bosshart, K. Schmetzer
Ramaura – une nouvelle synthèse de rubis
Ramaura – une nouvelle synthèse de rubis. Published in Journal Suisse des horlogers et des bijoutiers-orfèvres, 1985. Author(s): G. Bosshart
Naturally-coloured and treated yellow and orange-brown sapphires
Naturally-coloured and treated yellow and orange-brown sapphires. Published in Journal of Gemmology, 1983. Author(s): K. Schmetzer, G. Bosshart, H.A. Haenni
Naturfarbene und behandelte gelbe und orange-braune Sapphire
Naturfarbene und behandelte gelbe und orange-braune Sapphire. Published in Zeitschrift der Deutschen Gemmologischen Gesellschaft, 1982. Author(s): K. Schmetzer, G. Bosshart, H.A. Haenni