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Divers of Sewa 150
Artisanal Diamond Divers in the Spotlight
Fifty-year old John is a diamond diver in Sierra Leone, one of a few hundred or thousand such divers out of some 1.5 million artisanal miners worldwide. His work is arduous: Going 5 to 10 meters underwater without a mask, he relies on his...
Mining Oct 07, 2020 Sonia Esther Soltani
La Peregrina pearl
SSEF Launches Service Identifying Pearl Species
The Swiss Gemmological Institute (SSEF) has introduced a service that determines a pearl’s species using DNA fingerprinting.The Basel-based laboratory has substantially expanded its database and capabilities, enabling it to identify each of the eight oyster...
Technology Jun 03, 2020 Rapaport News
SSEF Gem Track
Lab Debuts Rough-to-Polished Gem Tracker
The Swiss Gemmological Institute (SSEF) has launched aservice for linking polished gemstones to their original rough, it saidTuesday. GemTrack creates a fingerprint that documents the stone’sjourney from mine to market, based on analyses of the stone’s...
Polished Markets Feb 26, 2019 Rapaport News
Brendan laurs
Gem-A Names Laurs as Editor-In-Chief
Press Release: The Gemmological Association of Great Britain (Gem-A) appointed editor, geologist and gemologist Brendan Laurs as its new editor-in-chief of The Journal of Gemmology. The move signals greater editorial cooperation across the U.K.,...
Marketing Sep 10, 2013 Gem-A
'Keshi' Cultured Pearls Enter the Natural Trade
Press Release: The Swiss Gemmological Insititute SSEF has received large quantities of saltwater pearls for certification in recent weeks. SSEF's director, Dr. Michael S. Krzemnicki, said these pearls are generally characterized by an almost perfect appearance and are often accompanied by reports describing them as natural pearls....
Gemstones May 17, 2010 SSEF
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