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| Amethyst | |
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| Tweet Topic Started: Dec 15 2010, 06:26 PM (1,512 Views) | |
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Dec 15 2010, 06:26 PM Post #1 |
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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 | Feb 6 2011, 11:03 PM Post #31 |
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Elizabeth Taylor, I think... http://www.answerbag.com/q_view/430936 |
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Feb 8 2011, 05:00 PM Post #32 |
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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 | Feb 8 2011, 05:37 PM Post #33 |
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A very minor case of serious brain damage
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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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Feb 10 2011, 12:47 AM Post #34 |
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Interesting... I definitely find it to be one of the most prettiest gems known. |
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| CJ | Feb 10 2011, 05:09 PM Post #35 |
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A very minor case of serious brain damage
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I think it is too. What about citrine? It's basically amethyst that's been heated, and changed to a yellow-orange colour:
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| Michelle | Feb 10 2011, 06:47 PM Post #36 |
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That's really cool. Never seen any before, I don't think. |
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| CJ | Feb 10 2011, 06:58 PM Post #37 |
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A very minor case of serious brain damage
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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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Feb 10 2011, 09:46 PM Post #38 |
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It's weird because yellow is opposite purple... |
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| CJ | Feb 10 2011, 10:00 PM Post #39 |
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A very minor case of serious brain damage
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Yes, it is. I hadn't thought of that, actually! |
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| Michelle | Feb 10 2011, 10:58 PM Post #40 |
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That is weird. I hadn't thought of that before either! |
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| CJ | Feb 17 2011, 09:11 PM Post #41 |
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A very minor case of serious brain damage
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Yeah. It does sometimes occur naturally, but this is rare. |
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| Michelle | Feb 17 2011, 09:17 PM Post #42 |
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I bet it is. |
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| CJ | Feb 17 2011, 11:14 PM Post #43 |
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A very minor case of serious brain damage
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Yeah, although it's never really been as highly valued as sapphire or anything like that. |
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| Michelle | Feb 18 2011, 03:12 AM Post #44 |
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Yeah, I bet, sapphire's nicer. |
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| CJ | Jan 16 2013, 01:00 AM Post #45 |
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A very minor case of serious brain damage
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Ametrine is nice too: |
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| Michelle | Jan 16 2013, 01:26 AM Post #46 |
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What is that? I was confused when I saw it. It's so beautiful! |
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| CJ | Jan 17 2013, 12:03 AM Post #47 |
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A very minor case of serious brain damage
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That's basically amethyst with one half "citrined", and the other half left as amethyst. |
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| Michelle | Jan 17 2013, 12:19 AM Post #48 |
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That's one of the weirdest minerals I've ever seen. |
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| Pyrite | Jan 17 2013, 12:40 AM Post #49 |
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Just as Planned
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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 | Mar 19 2013, 03:31 AM Post #50 |
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A very minor case of serious brain damage
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Interesting explanation. I thought it was just that one half had been heated, and the other hadn't! |
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