Posted in response to Re: Re: Amethyst -> citrine heat process? from Ward on January 03, 2011 at 12:34:02:
Those are the temps. usually suggested. With a 6 hour-plus cool-down... Some purple quartz turns a pale green, to prasiolite.
From Raymond Hietapakka - January 04, 2011 at 10:58:56
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