image: A cut and polished CLIPPIR diamond, with metallic inclusions. The most obvious group of inclusions looks like black spots on the left side, middle. This material relates to a paper that appeared in the Dec. 16, 2016, issue of Science, published by AAAS. The paper, by E.M Smith at Gemological Institute of America in New York, N.Y., and colleagues was titled, "Large gem diamonds from metallic liquid in Earth's deep mantle." view more
Credit: Jae Liao