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 which would allow an unambiguous detection of this type of treatment.
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 testing coloured gemstones. Please contact us to make an appointment. More information on our Bangkok services
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 activities. – The history of gems– Co-bearing spinel from Tanzania– Calibrated coloured stones&
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 B0311-14 May 2023 (May 10th is setup day, goods can be submitted from 10am onwards)Tel: +41 79 219 72 38 (only
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 issuing gemstone reports. Unfortunately, and especially lately, the detection of such heating is not always straight
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 Inspection system, jointly developed by SSEF and UNIMEC, which will be unveiled at GemGenève International Gem a
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 Booth J16/1703-06 November 2022 (November 2nd is setup day, goods can be submitted from 10am onwards)Tel: +41 79 2
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 mission and accomplishments, some 150 industry leaders and opinion-makers from around the world gathered in Basel
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 our website) with 10 questions about SSEF and gems, and enter the draw to win three fantastic prizes. First pri