Полезни връзки

Автор: Nikoleta, Публикувана на 15.12.2021 г.

Handbook PDFs – Mineralogical Society of America

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Mineralogy Database

Gemological Institute of America (GIA)

Hoge Raad voor Diamant (HRD)

International Gemological Institute (IGI)

International Gem Society (IGS)

Gübelin Gemmological Laboratory

Gemology Project

Nelson, S. 2016. Mineralogy. – Tulane University, Department of Earth & Environmental Sciences 2110, 24 lectures

Online Gemological Forum

Ruby-Sapphire.com

https://mgu.bg/библиотека