Armenia Birthstone Fashion Emerald Diamond Gold Jewellery.
By Aamir Mannan.
Jump up ^ Badawy, Manuela (June 13, 2012). "Emeralds seek the 'De Beers' treatment". Reuters. Retrieved 14 June 2012.
Jump up ^ Dydyński, Krzysztof (2003). Colombia. Lonely Planet. p. 21. ISBN 0-86442-674-7.
Jump up ^ Branquet, Y. Laumenier, B. Cheilletz, A. & Giuliani, G. (1999). "Emeralds in the Eastern Cordillera of Colombia. Two tectonic settings for one mineralization". Geology 27 (7): 597–600. Bibcode:1999Geo....27..597B. doi:10.1130/0091-7613(1999)027<0597:EITECO>2.3.CO;2.
Jump up ^ Carrillo, V. (2001). Compilación y análisis de la información geológica referente a la explotación esmeraldífera en Colombia. Informe de contrato 124. INGEOMINAS
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