Application de l'analyse isotopique par spectrométrie de masse et sonde ionique de l'oxygène des émeraudes naturelles

G. Giuliani (1, 2) , M. Chaussidon (1) , C. France-Lanord (1) , C. Rollion (1) , D. Mangin (1) , P. Coget (1)

1 CRPG - Centre de Recherches Pétrographiques et Géochimiques
2 IRD - Institut de Recherche pour le Développement

Simple and non-destructible methodologies for the authentication of gems like emeralds are generally not efficient enough for confirming geographical and geological origins [1]. This paper deals with the use of isotopic methodologies for emeralds authentication. An isotope ratio mass spectrometer coupled with an ionic probe allows to measure 18O/16O ratios from oxygen which is the main constitutive element of these gems [2,3]. The isotopic study of 62 different deposits allowed to draw up the map of oxygen isotopic ratios and to identify the origin of most of the high-grade emeralds marketed all over the world.

Domaines: Minéralogie; Géochimie

G. Giuliani, M. Chaussidon, C. France-Lanord, C. Rollion, D. Mangin, et al.. Application de l'analyse isotopique par spectrométrie de masse et sonde ionique de l'oxygène des émeraudes naturelles. Analusis, 1999, 27 (3), pp.203-206. ⟨10.1051/analusis:1999270203⟩. ⟨insu-01882150⟩