Carborundum is often a black or grey crystal with shimmering Irredescent colours. It balances the chakras, and is calming and gently grounding. It shields and protects, particularly in cases of electromagnetic stress.
Carborundum allows for inner expansion in an orderly and organised manner, as if each individual cell has been allocated the same amount of space around it. In spite of the dark colouration of the stone, its general mood is light and happy.