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SSEF on-site testing in Hong Kong, 14 – 24 September 2023
We will be in Hong Kong 14 – 24 September offering our on-site testing services, during the upcoming Hong Kong Jewellery and Gem Fairs. Equipped with our mobile instruments and spectrometers, we wil
SSEF in Bangkok 23 August – 01 September 2023
We will be in Bangkok 23 August – 01 September 2023 offering our on-site testing services. The office will be closed on August 26th and 27th. Our office is in the gem trade district at the Silom Roa
Irradiation Treatment in Rubies and other Corundum Varieties: Update about Ongoing Research at SSEF on this Issue
Irradiation of corundum varieties to change and enhance their colour is known since many decades but remains a difficult and challenging issue until today, as no gemmological method is currently known
SSEF in Bangkok 22 – 26 May 2023
We will be in Bangkok 22 – 26 May 2023 offering our on-site testing services. Our office is in the gem trade district at the Silom Road. Equipped with our instruments and spectrometers, we will be t
SSEF FACETTE MAGAZINE 2023
The latest edition (May 2023) of SSEF’s Facette magazine is now available online as a PDF. This magazine brings you reports of our latest gemmological research and findings, courses and other SSEF a
SSEF at GemGenève (11-14 May 2023, Booth B03)
SSEF is honoured to take part in the upcoming edition of the GemGenève show at Palexpo in Geneva. We will be offering coloured gemstone express testing services at our booth B03. SSEFGemGenève Booth
New and additional criteria to detect low-T heated pink sapphires applied by SSEF
Heat treatment of ruby, sapphire and other colour varieties of corundum is one of the main issues for the gem trade. As such, detecting such treatment is a major task of gemmological laboratories issu
SSEF at Tucson AGTA show (31 January – 5 February 2023)
SSEF is honoured to take part in the upcoming edition of the AGTA show in Tucson (AZ, USA). We will be offering coloured gemstone express testing services at our booth in the East Galleria. SSEFAGTA B
SSEF and UNIMEC introduce the ASDI-500, world’s most precise automated small synthetic diamond screener
The ASDI-500 is able to detect and extract synthetics and simulants as small as half a millimetre in diameter, at the astounding speed of 700 stones per hour. The ASDI-500 Automated Diamond Spectral I
SSEF at GemGenève (03-06 November 2022, Booth J16/17)
SSEF is honoured to take part in the upcoming edition of the GemGenève show at Palexpo in Geneva. We will be offering coloured gemstone express testing services at our booth J16/17. SSEFGemGenève Bo
50 years of SSEF: special symposium & gathering of key industry leaders in Basel
For 50 years, the Swiss Gemmological Institute SSEF has been the forefront of scientific gemmological research and testing to support a thriving gemstone and jewellery trade. In tribute of both its mi
SSEF at Jewellery & Gem World Singapore (27-30 September 2022, Booth 5B36)
SSEF will exhibit at Jewellery & Gem World Singapore (27-30 September 2022, Booth 5B36)
SSEF turns 50 – enter quiz and win prizes!
SSEF turns 50 in 2022! The non profit Schweizerische Stiftung für Edelsteinforschung was founded on August 22nd 1972 by Swiss trade organisations. Test your knowledge (all the answers can be found on
SSEF conducts analysis of cobalt-blue spinel from a newly reported source in Tanzania
For several months already a supply of blue cobalt-bearing spinel has been appearing in the gem trade, including some stones of remarkable size -up to 40 carats- and quality. According to information
New additional test at SSEF for the colour stability of rubies
In light of information gathered over the past few months, we have now added rubies to this colour stability testing protocol, specifically but not limited to rubies originating from Mozambique.