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Retro...I appreciate your posts on this subject, as I find them very informative and interesting. But it doesn't seem to have any bearing on my OP. If you look at the link, and it is one of very many on the same subject, it is saying that crystals and rocks can help cure a plethora of ailments, when that is patently drivel. Which I am sure you are aware of. If crystals were all plain, like glass, its doubtful whether they would be so popular amongst the more intellectually challenged. Its their innate prettiness that I find attractive in my collection.
But thanks for your info !