CIBJO releases Gemmological Special Report: considers process of separating measurable facts from opinion; See Gemological Articles below.
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 Post subject: Trapiche tourmalines
PostPosted: Thu Sep 20, 2018 9:03 am 
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I have seen Trapiche emeralds, sapphires, and rubies but not toumaline. Here is one I'm bidding on now.


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 Post subject: Re: A new definition for Parariba tourmaline.
PostPosted: Thu Sep 20, 2018 1:19 pm 
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Nicky Newark wrote:
I have seen Trapiche emeralds, sapphires, and rubies but not toumaline. Here is one I'm bidding on now.



They are nice...

https://www.gia.edu/doc/Trapiche-Tourma ... Zambia.pdf

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 Post subject: Re: A new definition for Parariba tourmaline.
PostPosted: Thu Sep 20, 2018 2:04 pm 
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Some even show a more classic trapiche form:
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But this should go in another thread. I may split it off when i get on my pc.

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 Post subject: Re: A new definition for Parariba tourmaline.
PostPosted: Thu Sep 20, 2018 2:37 pm 
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Great idea!

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 Post subject: Re: Trapiche tourmalines
PostPosted: Fri Sep 21, 2018 3:35 pm 
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Oh, also a fun fact, I had MAGI test that trapiche tourmaline and it was also a chrome tourmaline (I imagine they all are). So it all ties together!

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