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generous. The diamonds had been sold with GSI
and IGI certificates. The television station sent the stones to be re-examined by GIA, presenting its results as “right” and the other laboratories as “wrong.” The CBC report did not provide many details on the 4C but concluded that the prices had been consequently inflated by up to 23%. The journalists are good to provide facts and figures on a subject which can inspire a strong headline and very often they have no time or desire to investigate.
But the devil is in the details and in the nuances.
Roland Lorie, CEO of IGI, described the story as tendentious, subjective, and unprofessional. “A fair study would guarantee anonymity, without none of the parties knowing the scores of the other”, he said, noting that GIA would have known from the laser inscription how the stones had been assessed by another laboratory. “Differences of one grade occur and are tolerated in
di Luigi Cosma
the industry. There is no proof of which votes are wrong, nevertheless the journalist personally decided who was right, when in fact they were both more severe or more tolerant”. There could be another way. Will a moment arrive in which AI will completely replace human diamond graders? No, says Lorie (who manages an assessment laboratory). Yes, says David Block, who manages a diamond technology company
(he is CEO of Sarine).
Lorie believes that there
will always be a need for human input. “We believe that AI has a future in colour assessment, in some ways, and probably clarity”, he said. “The results of the research and development of IGI are promising. In fact, AI should be possible for most stones. Nevertheless, many functions will remain a challenge because AI requires hundreds of thousands of inputs. Simply there are not enough samples of everything, in certain nuances for example. At IGI we believe
that AI can help many times, but human judgement will still be necessary”. Block does not agree and sees a moment in which AI will do everything alone. “Assessment based on automated technology will take us all the way, with all the parameters”, he declared. “And I have no doubt about this. I am 100% sure of this. Today I would safely say that I believe that the assessment of the 4Cs is done better technologically than manually”.
He also declared that AI
is “drastically” more repeatable than manual assessment, which means that it will always assess the same stone in the same way. But it learns the precision from manual assessors, and it will take time to eliminate their inconsistencies. This is why he underlined “possibly.” Today, technology can already coherently assess colour, fluorescence, clarity, cut grade and symmetry. In future, it will include the quality of the polish, nuances, opacity and more.
DMCC AGGIORNA
IL CODICE DI CONDOTTA PER LE ASTE
La zona franca di Dubai DMCC ha perfezionato il processo di aste alla Dubai Diamond Exchange,
che è già la più grande struttura di aste di diamanti al mondo.
Nella nuova iniziativa, DMCC ha creato un Codice di Condotta per le migliori pratiche di offerta all'interno della DDE. Si tratta di un'iniziativa unica nel suo genere in tutto il mondo. L'adesione al Forum è su invito e aperta ai membri della DDE che hanno condotto almeno due aste nei 12 mesi precedenti alla creazione del Forum.
Tra i membri attuali
vi sono Trans Atlantic
Gem Sales, Stargems,
Koin International,
Gem Auctions, Kruger Diamond Traders e Billiton Diamond Auctions, che hanno completato complessivamente oltre
60 aste a Dubai nel 2022.
I membri potranno utilizzare il logo "Tender Best Practice Forum" per dimostrare il
DIAMOND NEWS