Talk:Amethyst

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Article Grading: The following comments were left by the quality and importance raters: (edit · refresh) Greater inline citations needed for easy referencing of facts. Highly important article, based on birthstone. SauliH 16:22, 30 January 2007 (UTC)
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Vandals remark deleted.
Adrian Pingstone 09:34, 22 Mar 2004 (UTC)

Contents 1 Folklore 2 Outdated information about colour 3 Amethyst Color Examples 4 This page was vandalized 5 Added some chemistry info

[edit] Folklore

Should this really be here, and if it should, should some of the remarks be backed up or justified?

The remark that soldiers carried amethyst in their swords, for example, does not specify which soldiers, where, or what evidence there is. Are these pre-christian Romans or eighteenth century Japanese soldiers? And who says all these things? Is there any documentation? I'm not at all sure this section should be published as it is. Brentford 10:37, 6 Dec 2004 (UTC)

A check of the article history shows that it was probably part of the 1911 text dump back in 2002. It is in need of either good referencing and/or a drastic clean-up. Simple deletion of the section would probably irritate some. -Vsmith 12:59, 6 Dec 2004 (UTC)

[edit] Outdated information about colour

The information about the colour of the amethyst comes from 1911 Encyclopædia Britannica, as it can be seen on [1] but the theory about being attributed to the presence of manganese or being of "organic source" is outdated. I am not a chemist and my English is poor, so I will not modify the article myself. From what I know, the colour of the amethyst appears when some quartz is at proximity of uranium (in the ground): the radiations make some electrons to quit the impurity aluminium atoms, and create one colour centre. There are maybe other colour centres than those around aluminium. I hope someone can verify and update the article. Alkarex 17:55, 31 Jan 2005 (UTC)

Bibliography: Quartz Crystals and Their Colors 10.1002/anie.197302831 «The many colors found in quartz crystals are always due to the presence of impurity atoms...» and also on Google Scholar. Alkarex 23:32, 31 Jan 2005 (UTC)

Here is another article attributing the color of amethyst to color centers -- amethyst link. I am trying to write articles on color centers, and may be able to find a more authoritative description to add at some point. Zolot 00:01, 28 March 2007 (UTC)

[edit] Amethyst Color Examples

To continue the discussion of amethyst color, metaphysical ideas and photos showing 9 colors of amethyst geodes may be found in a copyrighted article [2]

Edistw 7 Jan 2006

[edit] This page was vandalized

I'm a newbie here; I could see how to look at the history but I couldn't find any way to revert to the previous good version of the page.

Thanks for getting my attention, the vandalism has been reverted now. Vsmith 19:38, 15 May 2006 (UTC)

[edit] Added some chemistry info

Introduced a notes section, as it seemed appropriate for the two references I added. --Olneya 20:11, 30 March 2007 (UTC)