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    Fingerprinting of ruby and sapphire gemstones through Fourier-transform infrared (FTIR) methodologies by A. Soares de Sousa, E. M. C. Gomes, L. Bayés-García, A. Di Mariano, M. Garcia-Valles

    Published 2025-02-01
    “…In this study, 25 rubies and sapphires (natural, synthetic, and treated) from the Gemology School of the University of Barcelona were analysed using standard gemological instruments and FTIR spectroscopy. …”
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