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SSEF closed 20 December – 2 January
Our whole team would like to thank you for your confidence in our services and for following us on our social media accounts. We wish you peaceful holidays and look forward to working with you in 2026. We would like to inform you that the SSEF laboratory will be closed for the holidays from Decembe
Effects of Gamma Irradiation on Corundum: Towards a Potential Detection Method
Corundum, encompassing the highly prized ruby and sapphire varieties, stands as a cornerstone of the global gemstone market.
HFSE-enriched sapphires of gem quality: A combined FTIR and trace element study and implications for heat treatment detection
Gem-quality sapphires containing ‘exotic’ elements such as Sn, Nb, Zr, Ta, W, are of special interest in gemmological research, as the concentration of these so-called high-field- strength-elements (HFSE) often correlate with detectable traces of naturally incorporated beryllium (Whatanakul et a
Julia Griffith joins SSEF as Head of Education
We’re pleased to announce that Julia Griffith FGA, DGA, EG recently joined SSEF to lead our education programs, bringing extensive experience in gemmology training. Formerly with Gem-A and founder of The Gem Academy, Julia is passionate about inspiring professionals and gem enthusiasts through inn
SSEF at the 99th CIBJO Congress
As part of a Swiss non-profit foundation, the Swiss Gemmological Institute SSEF recognises its responsibility to go beyond laboratory services and to actively contribute to the integrity, transparency, and advancement of the gem and jewellery sector. The 99th CIBJO Congress is currently taking place
SSEF at the 38th IGC Conference
The recent International Gemmological Conference (IGC 2025), held in Athens, brought together leading researchers and laboratories from around the world to present the latest advances in gem science. Among the contributors, two researchers from the Swiss Gemmological Institute SSEF presented finding
Väyrynenite of Exceptional Quality and Size, Reportedly from Nigeria
Väyrynenite is an attractive and rare phosphate mineral that—until recently—has been known in gem quality mostly as small, often included stones from northern Pakistan (and less commonly, Afghanistan). Since early 2025, väyrynenite gemstones of exceptional quality and size have entered the m
Species Identification of Coral Jewellery by Genetic Testing: Case Studies, Experiences and Prospects
This article reviews and details how DNA testing can be used to identify species of precious coral used in jewellery. Since certain species are listed by CITES (Convention on Inter- national Trade in Endangered Species of Wild Fauna and Flora), the correct identification of coral species is of utmos
Applications now open for the Second Edition of the SSEF Education Scholarships
SSEF is delighted to launch the second edition of its two annual educational scholarships in gemmology. Each scholarship offers the winner the opportunity to attend a course at SSEF free of charge. In addition, SSEF will cover the costs of economy flights and hotel accommodation (for one participant
SSEF on-site testing in Hong Kong, 11 – 21 September 2025
We will be in Hong Kong 11 – 21 September offering our on-site testing services, during the upcoming Hong Kong Jewellery and Gem Fairs. Equipped with our mobile instruments and spectrometers, we will be testing coloured gemstones (no diamonds or pearls) at the Asia World Expo (AWE, 15 – 19 Septe
News from the SSEF (2025)
Presentation by Dr Laurent E. Cartier & Dr. Michael S. Krzemnicki at the Swiss Gemmological Society SGG conference in 2025.
Genetic Testing of a High-End ‘Angel Skin’ Precious Coral Necklace Identifies a Species New to the Precious Coral
Genetic Testing of a High-End ‘Angel Skin’ Precious Coral Necklace Identifies a Species New to the Precious Coral Trade and Potentially New to Science. Diversity 2025, 17, 395
Synthetic coloured stones (2025)
Presentation by Dr. Michael S. Krzemnicki at the 2025 GILC conference in Tucson in February 2025.
Trace DNA from a century‐old holotype specimen resolves taxonomic uncertainties: the case of the Hawaiian pink precious coral
Trace DNA from a century‐old holotype specimen resolves taxonomic uncertainties: the case of the Hawaiian pink precious coral (Pleurocorallium secundum), a CITES‐listed species used in jewelry.
SSEF at GemGenève (08-11 May 2025, Booth L09)
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 L09. SSEFGemGenève Booth L0908-11 May 2022 (May 7th is setup day, goods can be submitted from 10am onwards)Tel: +41 79 219 7
SSEF on-site testing in Hong Kong, 26 February – 08 March 2025
We will be in Hong Kong 26 February – 08 March offering our on-site testing services, during the upcoming Hong Kong Jewellery and Gem Fairs. Equipped with our mobile instruments and spectrometers, we will be testing coloured gemstones (no diamonds or pearls) at the Asia World Expo (AWE, 02 – 06
The age of gems (2025)
Presentation by Dr. Michael S. Krzemnicki at the 2025 AGA conference in Tucson in February 2025.
SSEF Mourns the Loss of Former Director Professor Henry A. Hänni
January 13, 2025 Basel, Switzerland – It is with sadness that we announce the passing of Professor Henry A. Hänni, former Director of the Swiss Gemmological Institute SSEF, who died peacefully at his home in Basel on January 9, 2025, surrounded by his family. Professor Hänni, whose remarkabl