Registros del 1 al 2 de 2 encontrados |
![](./images/clear.gif) 1.- Ein Beitrag zum Thema Onyx ;On the topic of onyx
Deutsche Gemmologische Gesellschaft e.V.; Idar-Oberstein; DEU; Germany, 2010
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![](./images/clear.gif) 2.- Emeralds from the Fazenda Bonfim region, Rio Grande do Norte, Brazil
Gemological Institute of America; Santa Monica, CA; USA; United States, 2012
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