Variety(-ies):
The color of corundum is colorless, purple, red, orange, yellow, green, blue, violet, brown, white, gray, and black.
The mohs hardness of corundum is 9.0.
The mohs hardness scale from 1 (the lowest hardness) to 10 (the highest hardness).
Corundum associates with cancer, leo, scorpio, and sagittarius.
.jpg)
