Researchers from the Heidelberg University, Germany, unveil how sapphires are formed in volcanoes, according to a study published in the journal Contributions to Mineralogy and Petrology. The Eiffel is a
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Researchers from the Heidelberg University, Germany, unveil how sapphires are formed in volcanoes, according to a study published in the journal Contributions to Mineralogy and Petrology. The Eiffel is a