AUTHOR=Sciortino Silvio , Apostolova Tzveta TITLE=Editorial: The Physics of Diamond and its Technological Applications JOURNAL=Frontiers in Physics VOLUME=9 YEAR=2021 URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2021.739310 DOI=10.3389/fphy.2021.739310 ISSN=2296-424X