A Close-Up View of a Metallic Inclusion (IMAGE) Gemological Institute of America Caption This is a close-up view of a metallic inclusion. The inclusion is reflective/silver in appearance, surrounded by a black, graphite-bearing decompression crack. Image is 2.56 mm wide. Credit Photo by Evan Smith; © GIA Usage Restrictions Mandatory photo credit of: Photo by Evan Smith; © GIA License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.