Geology 102: Natural Processes that Form Colored Gemstones | GIA Knowledge Sessions Webinar Series

GIA Knowledge Sessions Webinar - recorded live on April 1, 2021.

Gemstones require extraordinary geologic circumstances to form. Not only do different minerals need to meet under the right conditions and crystallize, but certain rare elements also need to be part of the mixture for the crystal to be the right color. Tune in as Wim Vertriest, supervisor of field gemology, builds on the earth science introduced in “Geology 101 for Gemologists” to explore how alexandrite and spinel form in the earth’s crust and why pegmatites – an igneous rock that is the source of an incredible variety of gems and mineral specimens – is known as ‘natures treasure chest.’

Watch Geology 101: Natural Processes that Form Colored Gemstones: https://youtu.be/mDIRqF_02DE

Read more of Wim Vertriest's research:
https://www.gia.edu/gems-gemology/spring-2017-gemnews-new-discovery-emeralds-ethiopia
https://www.gia.edu/gems-gemology/winter-2017-microworld-complex-yellow-fluid-inclusions
https://www.gia.edu/gems-gemology/summer-2019-decade-of-ruby-from-mozambique

Видео Geology 102: Natural Processes that Form Colored Gemstones | GIA Knowledge Sessions Webinar Series канала Official GIA Channel