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Blak, Ana Regina; Isotani, Sadao; Watanabe, Shigueo (1983). "Optical absorption and electron spin resonance in blue and green natural beryl: A reply". Physics and Chemistry of Minerals. 9 (6): 279. Bibcode:1983PCM.....9..279B. doi:10.1007/BF00309581. S2CID97353580.
Fritsch, E.; Shigley, J.E. (1989). "Contribution to the identification of treated colored diamonds: diamonds with peculiar color-zoned pavilions". The Quarterly Journal of the Gemological Institute of America. 25 (2): 95–101. Bibcode:1989GemG...25...95F. doi:10.5741/GEMS.25.2.95.
Carranza, E. J. M.; Woldai, T.; Chikambwe, E. M. (March 2005). "Application of Data-Driven Evidential Belief Functions to Prospectivity Mapping for Aquamarine-Bearing Pegmatites, Lundazi District, Zambia". Natural Resources Research. 14 (1): 47–63. Bibcode:2005NRR....14...47C. doi:10.1007/s11053-005-4678-9. S2CID129933245.
Giuliani, G.; Chaussidon, M.; Schubnel, H.J.; Piat, D.H.; Rollion-Bard, C.; France-Lanord, C.; Giard, D.; de Narvaez, D.; Rondeau, B. (2000). "Oxygen isotopes and emerald trade routes since antiquity". Science. 287 (5453): 631–633. Bibcode:2000Sci...287..631G. doi:10.1126/science.287.5453.631. PMID10649992.
Ibragimova, E.M.; Mukhamedshina, N.M.; Islamov, A.Kh. (2009). "Correlations between admixtures and color centers created upon irradiation of natural beryl crystals". Inorganic Materials. 45 (2): 162. doi:10.1134/S0020168509020101. S2CID96344887.
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Viana, R.R.; da Costa, G.M.; de Grave, E.; Stern, W.B.; Jordt-Evangelista, H. (2002). "Characterization of beryl (aquamarine variety) by Mössbauer spectroscopy". Physics and Chemistry of Minerals. 29 (1): 78. Bibcode:2002PCM....29...78V. doi:10.1007/s002690100210. S2CID96286267.
Blak, Ana Regina; Isotani, Sadao; Watanabe, Shigueo (1983). "Optical absorption and electron spin resonance in blue and green natural beryl: A reply". Physics and Chemistry of Minerals. 9 (6): 279. Bibcode:1983PCM.....9..279B. doi:10.1007/BF00309581. S2CID97353580.
Fritsch, E.; Shigley, J.E. (1989). "Contribution to the identification of treated colored diamonds: diamonds with peculiar color-zoned pavilions". The Quarterly Journal of the Gemological Institute of America. 25 (2): 95–101. Bibcode:1989GemG...25...95F. doi:10.5741/GEMS.25.2.95.
Carranza, E. J. M.; Woldai, T.; Chikambwe, E. M. (March 2005). "Application of Data-Driven Evidential Belief Functions to Prospectivity Mapping for Aquamarine-Bearing Pegmatites, Lundazi District, Zambia". Natural Resources Research. 14 (1): 47–63. Bibcode:2005NRR....14...47C. doi:10.1007/s11053-005-4678-9. S2CID129933245.
Giuliani, G.; Chaussidon, M.; Schubnel, H.J.; Piat, D.H.; Rollion-Bard, C.; France-Lanord, C.; Giard, D.; de Narvaez, D.; Rondeau, B. (2000). "Oxygen isotopes and emerald trade routes since antiquity". Science. 287 (5453): 631–633. Bibcode:2000Sci...287..631G. doi:10.1126/science.287.5453.631. PMID10649992.
Viana, R.R.; da Costa, G.M.; de Grave, E.; Stern, W.B.; Jordt-Evangelista, H. (2002). "Characterization of beryl (aquamarine variety) by Mössbauer spectroscopy". Physics and Chemistry of Minerals. 29 (1): 78. Bibcode:2002PCM....29...78V. doi:10.1007/s002690100210. S2CID96286267.
Blak, Ana Regina; Isotani, Sadao; Watanabe, Shigueo (1983). "Optical absorption and electron spin resonance in blue and green natural beryl: A reply". Physics and Chemistry of Minerals. 9 (6): 279. Bibcode:1983PCM.....9..279B. doi:10.1007/BF00309581. S2CID97353580.
Carranza, E. J. M.; Woldai, T.; Chikambwe, E. M. (March 2005). "Application of Data-Driven Evidential Belief Functions to Prospectivity Mapping for Aquamarine-Bearing Pegmatites, Lundazi District, Zambia". Natural Resources Research. 14 (1): 47–63. Bibcode:2005NRR....14...47C. doi:10.1007/s11053-005-4678-9. S2CID129933245.
Ibragimova, E.M.; Mukhamedshina, N.M.; Islamov, A.Kh. (2009). "Correlations between admixtures and color centers created upon irradiation of natural beryl crystals". Inorganic Materials. 45 (2): 162. doi:10.1134/S0020168509020101. S2CID96344887.
"Color in the beryl group". Mineral Spectroscopy Server. minerals.caltech.edu. California Institute of Technology. Archived from the original on 22 August 2011. Retrieved 6 June 2009.
"Emerald Quality Factors". GIA.edu. Gemological Institute of America. Archived from the original on November 2, 2016. Retrieved November 1, 2016.