amethyst: References & Edit History
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Article History
| Type | Description | Contributor | Date |
|---|---|---|---|
| Modified link of Web site: Minerals.net - Amethyst. | Nov 07, 2026 | ||
| Add new Web site: IOPscience - Transactions of the Optical Society - The optical properties of amethyst quartz. | Sep 12, 2026 | ||
| Add new Web site: ABC listen - Nightlife - Romancing the Stones: amethyst and rose quartz. | Oct 17, 2025 | ||
| Add new Web site: Academia - Amethysts (PDF). | Jul 14, 2025 | ||
| Add new Web site: International Colored Gemstone Association - Amethyst. | May 23, 2025 | ||
| Add new Web site: Scientific Reports - Study on the effect of heat treatment on amethyst color and the cause of coloration. | Jun 21, 2024 | ||
| Add new Web site: University of Nebraska-Lincoln - Institute of Agriculture and Natural Resources - Traditional Birthstones - Amethyst (February). | Jun 24, 2023 | ||
| Add new Web site: International Gem Society - Amethyst Value, Price, and Jewelry Information. | Apr 28, 2023 | ||
| Add new Web site: Gemological Institute of America - Amethyst. | Mar 16, 2023 | ||
| Add new Web site: Geology.com - Amethyst. | Dec 08, 2022 | ||
| Add new Web site: Healthline - Do amethysts have any proven healing properties? | Sep 01, 2022 | ||
| Photo of an amethyst sample added. | Jan 13, 2010 | ||
| Added new Web site: Amethyst Galleries - Amethyst, The purple variety of Quartz. | May 21, 2008 | ||
| Article added to new online database. | Jul 28, 1999 |
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