New Mineral Named After GIA’s John Koivula
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 Post subject: Quartz heating: Temp and Time
PostPosted: Sat Dec 30, 2017 2:26 pm 
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Hi all
for my Collage Research I have to find information about quartz heat treatment
I searched for this but I just found the temperature and no one didn't talk about the time
Also I want to know about colorless quartz heating ! what will be happen if I heat colorless quartz.
thanks for your helps
sorry for my bad english


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 Post subject: Re: Quartz heating: Temp and Time
PostPosted: Sun Dec 31, 2017 4:23 pm 
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The late, great Mark Liccini probably shared the best and most comprehensive information on this, which can still mostly be found here http://web.archive.org/web/200104261026 ... Quartz.htm
I don't think heat treatment would do much to colorless quartz, since most effective heating seems to work on quartz that is already colored. One other possible effect of heat treatment though is releasing tiny water droplets within the stone which can give it a milky blue or violet color. I have only heard of that stuff starting out as citrine but I don't know if it would have to.

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