Diamonds in the Kamchatka Peninsula (Tolbachik and Avacha Volcanoes): Natural Origin or Contamination?

A study of diamonds found in the lavas of Kamchatka's Tolbachik and Avacha volcanoes challenges their natural origin, suggesting they may instead be synthetic contaminants. The research, published in Russian Geology and Geophysics, analyzed cubic-octahedral diamonds identical to those produced synthetically, raising concerns about potential contamination from human-made materials. Similar diamonds reported from other geologically distinct regions—such as Europe, China, Mongolia, and the Polar Urals—also exhibit striking similarities to synthetic crystals, further implying that such findings require rigorous verification before being accepted as natural. The authors emphasize the need for independent replication of results, open sampling sites, and exclusion of contamination sources (e.g., cutting tools) in future studies. This work underscores the importance of cautious interpretation when diamonds are discovered in unusual geological settings.

Pokhilenko, N. P., Shumilova, T. G., Afanas’ev, V. P., & Litasov, K. D. (2019). Diamonds in the Kamchatka Peninsula (Tolbachik and Avacha Volcanoes): Natural Origin or Contamination? Russian Geology and Geophysics, 60(5), 463–472. https://doi.org/10.15372/rgg2019024