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Amethyst
Topic Started: Dec 15 2010, 06:26 PM (1,512 Views)
thecostumedanceparty
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This one is a purple colored gem.
Link: http://upload.wikimedia.org/wikipedia/en/c/c6/Amethyst_Quartz.jpg

Apparentely it's a violet variety of quartz.
Edited by thecostumedanceparty, Dec 15 2010, 06:27 PM.
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Michelle
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Elizabeth Taylor, I think... http://www.answerbag.com/q_view/430936
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thecostumedanceparty
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One of the girls in my writing has purple eyes... and she's a downright demon. She's wicked hot, but mean.

Anyway, I'm getting off topic... where can amethyst be found I wonder?
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CJ
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A very minor case of serious brain damage

It seems to be found in various places all over the world, although some of the most notable amethyst mines are in South America. It used to be considered as rare and valuable as the four main precious gemstones (diamond, ruby, sapphire and emerald), but its value fell through the floor following the discovery of the extensive deposits in Brazil.
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thecostumedanceparty
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KingsIndian
Feb 8 2011, 05:37 PM
It seems to be found in various places all over the world, although some of the most notable amethyst mines are in South America. It used to be considered as rare and valuable as the four main precious gemstones (diamond, ruby, sapphire and emerald), but its value fell through the floor following the discovery of the extensive deposits in Brazil.
Interesting... I definitely find it to be one of the most prettiest gems known.
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CJ
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A very minor case of serious brain damage

I think it is too.

What about citrine? It's basically amethyst that's been heated, and changed to a yellow-orange colour:

Posted Image
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Michelle
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That's really cool. Never seen any before, I don't think.
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CJ
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A very minor case of serious brain damage

I have a couple of pieces at home. They aren't a nice yellow-orange colour, though...they're closer to brown.
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thecostumedanceparty
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It's weird because yellow is opposite purple...
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CJ
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A very minor case of serious brain damage

Yes, it is. I hadn't thought of that, actually!
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Michelle
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That is weird. I hadn't thought of that before either!
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CJ
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A very minor case of serious brain damage

Yeah. It does sometimes occur naturally, but this is rare.
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Michelle
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I bet it is.
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CJ
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A very minor case of serious brain damage

Yeah, although it's never really been as highly valued as sapphire or anything like that.
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Michelle
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Yeah, I bet, sapphire's nicer.
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CJ
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A very minor case of serious brain damage

Ametrine is nice too:

Posted Image
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Michelle
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What is that? I was confused when I saw it. It's so beautiful!
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CJ
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A very minor case of serious brain damage

That's basically amethyst with one half "citrined", and the other half left as amethyst.
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Michelle
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That's one of the weirdest minerals I've ever seen.
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Pyrite
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Just as Planned

And I know how this can happen. Amethyst and Citrine (Quartz) are both silicon dioxide, SiO2. One half has one type of dopant, and the other half has another. This gives the two different coloured halves (the colour depends on the type of dopant).

And it's pretty neat.
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CJ
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A very minor case of serious brain damage

Interesting explanation. I thought it was just that one half had been heated, and the other hadn't!
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