Tweakers' Asylum

reveals tourmaline to be pyroelectric, whereby the positive and negative poles are not necessarily manifested until heated to 100 degrees: so a dip in boiling water will do the trick.

If you ever get a chance to visit Quartzite, Arizona from about November through February, you can [purchase quartz, tourmaline and other semi precious stones fairly cheaply. It's the world's biggest swap meet/trailer park and a lot of rock hounds winter there in preparation for the Tucson show in late February/ April.

Stu

Edits: 03/28/08

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Tweakers' Asylum

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