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 - are known as "nature's treasure chest."
Watch Geology 101: Natural Processes that Form Colored Gemstones: • Geology 101: Natural P...
Read more of Wim Vertriest's research:
www.gia.edu/gems-gemology/spr...
www.gia.edu/gems-gemology/win...
www.gia.edu/gems-gemology/sum...

[@carycervantes7117]

So blessed your channel found me. 🙌

[@HappyKaci]

Thank you, I learned so much. It's easy to understand also. Very informative!

[@michaelbrett5400]

Excellent overview by a very gifted and enthusiastic lecturer, thank you for posting this presentation.

[@soldieroffortunate1296]

Great video

[@dimitrobellOFF]

Thanks guys!

[@cristinalago1981]

Fantastic!

[@mylesharvey6488]

A simple explanation of Valence shells helps. By moving down the number of shells increases as does the mass and size of the element.

[@fredoliveira6202]

I have a mine in Carnaiba Bahia, the 2 meter deep pegmatite produces emeralds and Alexandrites in parallel schist

[@goldcicvibefel7628]

Learned alot here. We're the M&Ms a mixture of regular & Peanut? Didn't know there was that much Oxygen in the Earth.
Red Beryl- yes, do a separate seminar on that please!

[@Shteven]

It literally breaks my heart thinking of all the gems destroyed on the way to the secondary deposit that never had a chance to be found.

[@thearts-n-stuff1038]

Why does jhonkovite look like iolite to me

[@aswaltan8962]

Im watching

[@DontWorryIamHere]

Sir , I won to selling Carbonado black diamond
🙏🙏 Thank,'s

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Very handsome