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 Post subject: Vanadium emerald needed
PostPosted: Thu Oct 18, 2007 7:57 am 
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Location: France | French Riviera
Hello,

I want to compare the Vis-NIR spectrum of
vanadium and copper beharing synthetic hydrothermal emerald
with the spectrum of a
natural vanadium beharing emerald from the Salininhas location in brazil.

Thank you to contact me by mp if you have litle sample (rought or cut) of naturel pure vanadium emerald (mostly from Saininhas).

thank you :)

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Jean-Marie Arlabosse
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PostPosted: Thu Oct 18, 2007 6:01 pm 
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Sorry I don't have a sample myself.

But I sure hope you are able to borrow one, because I'd love to see the results of the comparison with chromium emeralds.


Last edited by Brian on Sat Oct 27, 2007 12:28 am, edited 1 time in total.

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PostPosted: Thu Oct 18, 2007 6:11 pm 
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I think I can get a friend to send you some vanadium coloured emerald from Norway if that is of interest? Ain't sure what you mean with "pure vanadium emerald" but I suppose you mean that it shouldn't contain chromium, which the norwegian emeralds are free from (or rather; lack).

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PostPosted: Fri Oct 19, 2007 1:52 am 
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you can check it w/ a chelsa filter.. if no red = vanadium.. ( make sure you check w/ a dichroscope and get the blue/green split ( don't want to be sending vanadium glass now..)

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PostPosted: Fri Oct 26, 2007 7:16 am 
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Hello,

Thank you very much for your help.
Jung Kee, I have send you an mp about Norway sample V-emerald 8) .

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Jean-Marie Arlabosse
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