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Reply to: Evidence for two blue (type IIb) diamond populations

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The Original Article was published on 12 June 2019

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Fig. 1: Additional features consistent with a sublithospheric origin for the large 24.18-carat blue type IIb diamond (sample 110208093607, from the Premier kimberlite pipe at the Cullinan mine).

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Acknowledgements

We thank T. Stachel for constructive peer review and B. Luth for discussion on mineral stability.

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Authors and Affiliations

  1. Gemological Institute of America, New York, NY, USA

    Evan M. Smith & Wuyi Wang

  2. Department of Terrestrial Magnetism, Carnegie Institution for Science, Washington, DC, USA

    Steven B. Shirey & Jianhua Wang

  3. Department of Geological Sciences, University of Cape Town, Rondebosch, South Africa

    Stephen H. Richardson

  4. Department of Geosciences, University of Padova, Padua, Italy

    Fabrizio Nestola

  5. Geophysical Laboratory, Carnegie Institution for Science, Washington, DC, USA

    Emma S. Bullock

Authors
  1. Evan M. Smith
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  2. Steven B. Shirey
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  4. Fabrizio Nestola
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  5. Emma S. Bullock
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  6. Jianhua Wang
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  7. Wuyi Wang
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Contributions

E.M.S. prepared the manuscript with contributions from S.B.S., S.H.R. and F.N., and expert approval from E.S.B., J.W. and W.W. All authors were involved in this Reply.

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Correspondence to Evan M. Smith.

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Smith, E.M., Shirey, S.B., Richardson, S.H. et al. Reply to: Evidence for two blue (type IIb) diamond populations. Nature 570, E28–E29 (2019). https://doi.org/10.1038/s41586-019-1246-8

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