Seems to me if you can get a nice clean crystal, and make good electrical contact to it, there's no reason it shouldn't work.
It will probably involve a 2-stage step, the second to re-grow a single crystal.
This page describes how to use baking soda as an alternative to the dye fixer:
http://www.seawhy.com/xlroch.html
followed by a recrystallization for purity:
http://www.seawhy.com/xlone.html
Quote:
Originally Posted by ctc17
Interesting and worth a try. I would be interested in what the crystals taste like.
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One of the pages says they have a saline, cooling taste. Wouldn't eat too many though, Wikipedia says that the salt is used as a laxative :P You'd be better off trying it with sugar if you want something to eat... hehe.