Fyron, you do know that all you have to do is pop that big lump of coal into a pressure cooker and let the pressure build up to about 4000psi and you'll have a sparkling new diamond!
"Then who would the joke be on?"
P.S...and if the lump of coal was big enough you could call the shiny new diamond 'Hope 2: The bad boy's revenge'
Waaahahahaha! I'm so funny!
Cheers!