Fascinating phenomenon, but terribly written article.  Who is Eggert?  The article says that he is the person who led the team that discovered the temperatures and pressures needed to make a diamond liquid, but it doesn't give his full name or where he works.  Nor is there a citation to where the source article appears in <i>Nature Physics</i>.<p>Edit: Here is the abstract:
<a href="http://www.nature.com/nphys/journal/v6/n1/abs/nphys1491.html" rel="nofollow">http://www.nature.com/nphys/journal/v6/n1/abs/nphys1491.html</a>