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.
Talk given on X-ray microtomography at International Gemmological Conference (IGC) in Arusha (Tanzania) in 2009 by Dr. Michael Krzemnicki.
Talk given on radiocarbon dating of pearls at International Gemmological Conference (IGC) in Arusha (Tanzania) in 2009 by Dr. Michael Krzemnicki.
Flux-grown synthetic red spinels on the market again. Trade alert published in 2008.
Author(s): M.S. Krzemnicki
Serpentinite artefact resembling Libyan desert glass. Published in Gems & Gemology, 2008.
Author(s): M.S. Krzemnicki
New Tanzania mine uncovers source of exceptional rubies. Published in InColor, 2008.
Author(s): M.S. Krzemnicki, H.A. Haenni
Les perles: la beauté dans la diversité. Published in GoldOr, 2008.
Author(s): M.S. Krzemnicki