Name that Rock

[PixelRabbit]

My daughter bought me this for Christmas. I've been messing around with shooting it and this is the best so far. The colours have been hard to capture nicely!
Unfortunately I can't remember for the life of me what it is! (and didn't want to be rude and randomly message Bitter) I've googled and found some similar... maybe Hematite?
C&C always welcome

 

[PixelRabbit]

Hubby solved the mystery for me and it isn't hematite

 

[mishele]

coal

 

[PixelRabbit]

Hey Mishele, it's Silicon Carbide and man made!
Silicon carbide - Wikipedia, the free encyclopedia