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 Post subject: Heating Mozambique Green Tourmaline
PostPosted: Mon Aug 20, 2012 9:16 pm 
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Anyone have success heat treating green tourmaline from Mozambique? Open c axis. Stone is a bit dark and i'd like to lighten it up a bit.

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 Post subject: Re: Heating Mozambique Green Tourmaline
PostPosted: Sun Sep 16, 2012 11:50 pm 
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Location: Bangkok, Thailand.
Hi Jason,

You can cheaply and without specialist equipment create a reducing atmosphere to scrub some of the atoms out by packing ground-up activated charcoal or bi-carbonate or soda in tinfoil around your piece of tourmaline - this frequently helps to lighten the saturation. You will need to take it quite high in temp for some time and reduce the temp very slow to reduce thermal shock.

Hope this helps.

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 Post subject: Re: Heating Mozambique Green Tourmaline
PostPosted: Tue Sep 18, 2012 11:12 am 
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What Temperature do you suggest bringing these tourmaline up to 400 c 450 c 500 c 650 c which one this would be of a large help


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