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News
Category : SSEF around the globe
On-site testing in Hong Kong, February 2012
We will be in Hong Kong 13-20 February 2012 offering our on-site testing services, during the Hong Kong Jewellery and Gem Fair. Equipped with our mobile instruments and spectrometers, we will be certifying coloured gemstones at the Convention & Exhibition Centre (16-20 Feb., booth no. 3CON-056). Before the fair we will offer on-site testing at our HK office (13-14 Feb.). Please contact us in advance to make an appointment for pre-show testing.
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.
Category : SSEF around the globe, SSEF Press Releases
New design for SSEF Reports
Starting October 19th 2011, all SSEF reports (Diamond Grading Report, Gemstone Report, Test Report) are issued in a new and refreshed design. Diamond Grading Reports now also include the SSEF Cut Grade.