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 Post subject: white zircons
PostPosted: Thu Nov 25, 2010 5:16 pm 
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Joined: Tue Mar 23, 2010 8:46 am
Posts: 114
Location: Dubai
hi all
do you know if colorless zircons do exist natural...or all of them are heated?
and how do you prove that its been treated?
thanks for the help

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 Post subject: Re: white zircons
PostPosted: Thu Nov 25, 2010 6:20 pm 
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Joined: Tue Oct 17, 2006 11:33 am
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Location: New Zealand
Hi Francesco

As for proof of heat treatment (not just specific to white color), I know that in Burmese and Cambodian zircon the spectrum changes and as a result you will lose some of the absorbtion lines.
As for natural white zircon I have seen some untreated white Zircons from Australia but they seem to have just a slight overtone of some other color.

hope that helps

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 Post subject: Re: white zircons
PostPosted: Fri Nov 26, 2010 7:51 am 
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Joined: Tue Mar 23, 2010 8:46 am
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so totally colorless is indication of heated...and lose some spectrum lines (which ones?)...
some more infos? :)
thanks

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