If you would be interested in the chemical physical end of gem formation. Some great talk here. There was a bit of money raised with the auctions of some very fine specimens to support them. The various presenters kept my attention. I was listening close to the prospecting pegmatites information session.
https://www.dfwlivestream.com/dmcs
2020 Dallas Mineral Collecting Symposium August 21-23, 2020
Moderators: PinkDiamond, John
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2020 Dallas Mineral Collecting Symposium August 21-23, 2020
I'll jump over my shadow. https://www.virginvalleyopal.com"
Opals & more at my ESTY store https://swordfishmining.etsy.com"
Opals & more at my ESTY store https://swordfishmining.etsy.com"