Per 
The Irresistible Crystal {Object Class: Euclid}
HOW TO CONTAIN: SCP… should be stored in a 150 square inch room on a table, in a locked glass container, the room shall NOT have any windows.. to prevent personnel seeing it, the room shall be 50 degrees F, 10 C
WARNING: do NOT touch
DESC: SCP… is a crystal, that if seen, will drive whoever sees it into madness, they will try to get it no matter what happens to them, if they succeed they will NOT go back to normal
they will sit with it for hours on end, after 24 hours, however, their skin will start to melt, after 48 hours, their entire body will have melted, leaving a skeleton behind, though if they
do not succeed in getting the crystal after 24 hours, they will go crazy, and never be able to properly function again, after 1 year of being crazy, their skin will melt, leaving nothing behind
