Why epoxy-filled emeralds must be accepted
Why epoxy-filled emeralds must be accepted. Published in 1993. Author(s): H.A. Haenni
Origin determination for gemstones: possibilities, restrictions, reliability
Origin determination for gemstones: possibilities, restrictions, reliability. Published in 1993. Author(s): H.A. Haenni
La synthèse hydrothermale en Australie: émeraude et béryl rose
La synthése hydrothermale en Australie: émeraude et béryl rose. Published in Journal Suisse d’Horlogerie et de Bijouterie, 1993. Author(s): H.A. Haenni
Hydrothermal synthetic emeralds from Australia: emeralds and pink beryls
Hydrothermal synthetic emeralds from Australia: emeralds and pink beryls. Published in 1993. Author(s): H.A. Haenni
Glassy fillings: a loupe just isn’t enough
Glassy fillings: a loupe just isn’t enough. Published in ICA Gazette, 1993. Author(s): H.A. Haenni
Filled emeralds: please face reality
Filled emeralds: please face reality. Published in ICA Gazette, 1993. Author(s): H.A. Haenni
A new synthetic ruby from Greece poses challenges for gemmologists
A new synthetic ruby from Greece poses challenges for gemmologists. Published in Rapaport Diamond Magazine, 1993. Author(s): H.A. Haenni
New fracture-filling materials have replaced oil
New fracture-filling materials have replaced oil. Published in ICA Gazette, 1992. Author(s): H.A. Haenni
Identifications des fissures traitées
Identifications des fissures traitées. Published in Revue A.F.G., 1992. Author(s): H.A. Haenni
Identification of fissure-treated gemstones
Identification of fissure-treated gemstones. Published in Journal of Gemmology, 1992 Author(s): H.A. Haenni