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Natural diamonds form from carbon under extreme heat and pressure deep in the Earth's mantle.
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SUPPORTED
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Recorded sources
11 sources for · 0 against
Is it true that natural diamonds form from carbon under extreme heat and pressure deep in the Earth's mantle?
Yes. Multiple sources, including a NERC grant abstract and Wikipedia, state that natural diamonds form from carbon at high pressures and temperatures deep within the Earth's mantle.
Verdict: SUPPORTED · 11 sources for, 0 against · Last checked
Evidence for · 11
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Diamond - Wikipedia. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Diamond
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More for · 10
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Chepurov, A., Sonin, V., Dereppe, J., Zhimulev, E., & Chepurov, A. (2020). How do diamonds grow in metal melt together with silicate minerals? An experimental study of diamond morphology. doi.org. https://doi.org/10.5194/ejm-32-41-2020
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Stagno, V., McCammon, C., Kaminsky, F., & Marras, G. (2025). The redox state of the Earth’s lower mantle: combined evidence from natural mineral inclusions in superdeep diamonds and experimental predictions . doi.org. https://doi.org/10.5194/egusphere-egu24-19097
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O., T., S., H., & E., G. (2018). Ice-VII inclusions in diamonds: Evidence for aqueous fluid in Earth's deep mantle. authors.library.caltech.edu. https://authors.library.caltech.edu/records/tken8-h4j95
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Oliver, T., Shichun, H., & Eran, G. (2019). Data from: Ice-VII inclusions in diamonds: evidence for aqueous fluid in Earth's deep mantle. zenodo.org. https://doi.org/10.5061/dryad.7145v
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Liu, J., Wang, W., Yang, H., Wu, Z., Hu, M., Zhao, J., Bi, W., Alp, E., Dauphas, N., Liang, W., Chen, B., & Lin, J. (2019). Carbon isotopic signatures of super-deep diamonds mediated by iron redox chemistry. doi.org. https://doi.org/10.7185/GEOCHEMLET.1915
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Deep Mantle Recycling Revealed in Diamonds and their Mineral Inclusions (NERC Grant NE/J008583/1). (2026). data.gov.uk. https://data.gov.uk/dataset/deep-mantle-recycling-revealed-in-diamonds-and-their-mineral-inclusions-nerc-grant-ne-j008583-1
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Deep Mantle Recycling Revealed in Diamonds and their Mineral Inclusions (NERC Grant NE/J008583/1). (n.d.). data.europa.eu. https://data.europa.eu/data/datasets/deep-mantle-recycling-revealed-in-diamonds-and-their-mineral-inclusions-nerc-grant-ne-j008583-1
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M, G., X, L., Z, M., F, L., L, L., & Q, Z. (2025). Redox reactions in subducted CaCO<sub>3</sub>-Fe-SiO<sub>2</sub> as a potential source of superdeep diamond inclusions.. doi.org. https://doi.org/10.1038/s41598-025-33661-9
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F, F., C, L., E, T., E, D., & C, O. (2026). Combustion and Pyrolysis EA-IRMS Techniques to Determine the δ<sup>2</sup>H of Diamonds.. doi.org. https://doi.org/10.1002/rcm.70041
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A Diamond Trilogy: Superplumes, Supercontinents, and Supernovae. (n.d.). cir.nii.ac.jp. https://doi.org/10.1126/science.285.5429.851
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