Author’s Accepted Manuscript The charaCterization of NATURAL GEMSTONES using NON-INVASIVE ft-ir spectroscopy: new data on TOURMALINES Mariano Mercurio, Manuela Rossi, Francesco Izzo, Piergiulio Cappelletti, Chiara Germinario, Celestino Grifa, Maurizio Petrelli, Alessandro Vergara, Alessio Langella PII: S0039-9140(17)30972-4 DOI: http://dx.doi.org/10.1016/j.talanta.2017.09.030 Reference: TAL17933 To appear in: Talanta Received date: 5 July 2017 Revised date: 6 September 2017 Accepted date: 10 September 2017 Cite this article as: Mariano Mercurio, Manuela Rossi, Francesco Izzo, Piergiulio Cappelletti, Chiara Germinario, Celestino Grifa, Maurizio Petrelli, Alessandro Vergara and Alessio Langella, The charaCterization of NATURAL GEMSTONES using NON-INVASIVE ft-ir spectroscopy: new data on TOURMALINES, Talanta, http://dx.doi.org/10.1016/j.talanta.2017.09.030 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting galley proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. www.elsevier.com/locate/talanta