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È stato per la prima volta isolato il DNA delle perle, che consente di determinare la specie di ostrica che le ha prodotte e la sua origine. È quanto è emerso da un esperimento di una squadra del Politecnico di Zurigo e dell'Istituto svizzero di gemmologia.
I ricercatori, guidati da Bruce McDonald, hanno prelevato 10 milligrammi di tessuto attraverso un minuscolo foro che però, secondo quanto sottolineano gli autori, non danneggia il gioiello.
La scoperta potrebbe servire per favorire la trasparenza del commercio dei prodotti, di cui si potrà conoscere l'esatta provenienza.
ATS/GTa
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