At more than 80 billion USD in yearly commercial value, diamond sets the record for the most traded, valuable mineral on the planet. Despite its chemical simplicity, diamond has been the object of more research effort, and had more scientific and popular press pages written about it, than any other mineral.
Karen Smit, South Africa; Steve Shirey, USA; Graham Pearson and Thomas Stachel, Canada; Fabrizio Nestola, Italy; Thomas Moses, USA.