Putting P-T into context, the conditions involved in synthesizing some forms of lanthanum decahydride are enough to create diamonds.[1] The cubic phase of LaH1

Putting P-T into context, the conditions involved in synthesizing some forms of lanthanum decahydride are enough to create diamonds.[1] The cubic phase of LaH10 is synthesized around 170 GPa and 1000 K.[2] The SC properties arise ~10 centigrade below the freezing point of water, but still under enormous pressure (190 GPa). So if a sample of graphite were cooked aside during the synthesis of cubic LaH10, it would have become a diamond by the end of the experiment. [1] https://en.wikipedia.org/wiki/Diamond#Thermodynamics https://en.wikipedia.org/wiki/Diamond#Thermodynamics [2] https://sci-hub.se/10.1002%2Fanie.201709970 https://sci-hub.se/10.1002%2Fanie.201709970 (This paper shares some authors with the paper to which this post links.)