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News
Category : SSEF around the globe
SSEF On-site testing in Bangkok, May 2012
We will be in Bangkok 21-25 May 2012 offering our on-site testing services. Our office is in the gem trade district at the Silom Road. Equipped with our mobile instruments and spectrometers, we will be certifying coloured gemstones. Please contact us to make an appointment.
Category : SSEF around the globe, SSEF Press Releases
Facette No. 19 is published and available online
Our Facette brings you the latest news about our services and research activities. It comes fully redesigned for even more reading pleasure.
Category : Talks and Presentations
Study of historic turquoise imitations (odontolite) in last issue of Gems & Gemology
A recent SSEF study of brooches from the 19th century revealed that most gems were actually turquoise imitations. The results showed that these were mainly fossilized dentine (odontolite). The study was published in the last edition of Gems & Gemology: Krzemnicki, M.S., Herzog, F.A., Zhou, W. (2011) A historic turquoise jewelry set containing fossilized dentine (odontolite) and glass. Gems & Gemology, 47, 4, 296–301
Download abstract (pdf) Contact us for full article
Category : Talks and Presentations
New research on Bastnäsite from Pakistan
Recent research on the lesser-known mineral and gemstone Bastnäsite by Dr. Franz Herzog of SSEF. This is a fluor-carbonate containing Rare Earth elements (REE). The results of this study were presented at the IGC in July 2011 and are now available online.