Echte Perlen – Abalone, Conch, Melo – Exquisites von Meeresschnecken. Published in GoldOr, 2009.
Author(s): M.S. Krzemnicki
Echte Perlen ohne Perlmutter- unbekannt und geheimnisvoll. Published in GoldOr, 2009.
Author(s): M.S. Krzemnicki
Der Perlenstruktur auf der Spur. Published in GoldOr, 2009.
Author(s): M.S. Krzemnicki
New rubies from Montepuez, Mozambique. Published in Jewellery News Asia, 2009.
Author(s): M.S. Krzemnicki
Moonstones and Co: a brief review of the feldspar group. Published in 2009.
Author(s): H.A. Haenni
Explaining the flame structure in non-nacreous pearls. Published in 2009.
Author(s): H.A. Haenni
Damage to cut gemstones. Published in The Valuer, 2009.
Author(s): H.A. Haenni
Advancements in gemmological instrumentation over the last 30 years. Published in GAHK Journal, 2009.
Author(s): H.A. Haenni
2009 European Gemmological Symposium presentation (by Dr. Michael Krzemnicki) about different applications of Laser Ablation Inductively Coupled Mass Spectrometry in gemmology.
Presentation at 2009 European Gemmological Symposium (Bern, Switzerland) by Jean-Pierre Chalain on the platelet peak of HPHT-treated diamonds of type Ia.