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 remarkable career spanned over four decades, was a pioneering figure in the field of gemmology. His journey began as a technical assistant at the Mineralogical Institute of the University of Basel, where his fascination with minerals led him to pursue advanced studies, culminating in a PhD in 1980, with his doctoral thesis focusing on beryl from the Swiss Alps.
Additionally, the World Jewellery Confederation (CIBJO) also express & pays tribute to the memory of Professor Henry A. Hänni, who passed away on January 9, 2025, at home in Basel, Switzerland, at age 80.
CIBJO offers its condolences to Professor Hänni’s family, his colleagues at SSEF, his student and many friends.
CIBJO honours the memory and legacy of Professor Henry A. Hänni!
“Henry was a scientist who dedicated his life to researching, understanding and documenting precious minerals and other gem materials, with the primary objective of growing our knowledge base and then teaching to others what he had learned,” said Gaetano Cavalieri, CIBJO President. “He was a pure academic in the service of our industry, and a teacher, mentor and role model to generation of gemmologists who came after him. His legacy will live on in his students and writings, which will continue to serve us for many years to come” He added.
In 1990, Professor Hänni assumed the role of Director at SSEF, where he made invaluable contributions to the institute’s development and international reputation. His groundbreaking research in pearl and coloured stone analysis, treatment detection and origin determination has left an indelible mark on the field of gemmology.
Even after his retirement in 2009, Professor Hänni remained actively engaged in gemstone research and education. As a Professor of Gemmology at the University of Basel since 1996, he inspired countless students and professionals worldwide through his teaching and mentorship, sharing not only his vast knowledge but also his infectious enthusiasm for the field.
“Professor Hänni will be remembered not only for his extraordinary academic achievements but for his unique sense of curiosity,” said Dr. Michael S. Krzemnicki, Director of SSEF. “His warm personality and distinctive sense of humour touched all who knew him, making him not just a respected colleague but a beloved friend to many in the international gemmological community.”
His passing represents a significant loss to the global gemmological community, but his legacy will continue to influence and inspire future generations of gemmologists.
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