V.—The Colour of Amethyst, Rose, and Blue Varieties of Quartz. By T. L. Watson and R. E. Beard. Proceedings of the United States National Museum, Washington,1917, pp. 553–63.

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V.—The Colour of Amethyst, Rose, and Blue Varieties of Quartz. By T. L. Watson and R. E. Beard. Proceedings of the United States National Museum, Washington,1917, pp. 553–63.

Volume 4, Issue 11
R. H. Rastall
DOI: https://doi.org/10.1017/S0016756800136623

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V.—The Colour of Amethyst, Rose, and Blue Varieties of Quartz. By T. L. Watson and R. E. Beard. Proceedings of the United States National Museum, Washington,1917, pp. 553–63.

Volume 4, Issue 11
R. H. Rastall
DOI: https://doi.org/10.1017/S0016756800136623

To save this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you used this feature, you will be asked to authorise Cambridge Core to connect with your Google Drive account. Find out more about saving content to Google Drive.

V.—The Colour of Amethyst, Rose, and Blue Varieties of Quartz. By T. L. Watson and R. E. Beard. Proceedings of the United States National Museum, Washington,1917, pp. 553–63.

Volume 4, Issue 11
R. H. Rastall
DOI: https://doi.org/10.1017/S0016756800136623

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V.—The Colour of Amethyst, Rose, and Blue Varieties of Quartz. By T. L. Watson and R. E. Beard. Proceedings of the United States National Museum, Washington,1917, pp. 553–63.

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