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| Color origin of phenakites from the Ural emerald mines | 224 |
| November 2023 | December 2023 | January 2024 | February 2024 | March 2024 | April 2024 | May 2024 | |
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| Color origin of phenakites from the Ural emerald mines | 2 | 2 | 2 | 11 | 2 | 11 | 2 |
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| F_Spring_2018_Gems_Gemology.pdf | 211 |
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| Russia | 176 |
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| Kazan | 176 |