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 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 Booth in the East Galleria31 January-05 February 2023 Tel: +41 79 219 72 38 (only during AGTA Tucson show) Dr. [&
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
ISO standards in the diamond trade: history and benefits
Presentation at the 2022 Rendez-Vous Gemmologiques de Paris Conference by Jean-Pierre Chalain (original version of this presentation was in French, this version has been translated into English)
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)
The value of pearls: A historical review and current trends
The value of pearls: A historical review and current trends. Published in GemGuide, May/June 2022, 1-8.
Paraiba or Not? Cu-bearing Tourmaline with a Distinct Fe Concentration
Paraiba or Not? Cu-bearing Tourmaline with a Distinct Fe Concentration. Published in Journal of Gemmology, 2022, 38 (1), 20-22.
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