Join the Golden Gate chapter along with the Vancouver and Seattle chapters to welcome guest speaker Brendan Laurs as we delve into the incredible rainbow colored varieties of Tourmaline. What are the treatments, value factors, inclusions, and future challenges for the gem testing labs of this vast group? Finally, Brendan will talk about the origin determinations for the brilliant Paraiba type gems.
Brendan Laurs (MS, GG, FGA) is the editor-in-chief of The Journal of Gemmology published by Gemmological Association of Great Britain, as well as past editor of GIA’s quarterly journal Gems and Gemology. His geological and gemological specialization is in the formation of colored gemstone deposits.
Reserve your Spot The event is free of charge but registration is required to receive the Zoom meeting link.
Joined: Wed Dec 16, 2009 5:03 am Posts: 921 Location: Paris
What a pity that the schedule is impractical for me ... Nevertheless thank you again, Barbra, for the information. Tourmalines, like garnets, are a very attractive mineral world.
_________________ danielle
"I always believed in being myself"- Thelonious Monk
One thing I would like to see in this is talking about how various chromophores affect the axis colours for tourmaline, there's a lot of instances of odd colours that you need experience with many stones to explain. Wonder if they'll get to show off any laurellite specimens...
Users browsing this forum: No registered users and 10 guests
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot post attachments in this forum