One phase diagram for Mercury, as requested: Please Register or Log in to view the hidden image! Reproduced without permission, not for profit, under fair use blah blah yadda yadda from Source (free download, 5Mb). The horizontal blue line is room temperature (25°C), the red vertical line represents the minimum pressure require to solidify it - approximately 14 kbar.
Thanks! Thought mercury is some weird thing that does not solidfy even under high pressure So it is achievable, but really can't think of any use of it besides for research
