What is the hardness of brown corundum?
Brown corundum is made from calcined bauxite under high temperature by fusion process.
The mohs hardness of brown corundum is about 9.0,which is similar to white corundum‘s.
What is the hardness of brown corundum?
Brown corundum is made from calcined bauxite under high temperature by fusion process.
The mohs hardness of brown corundum is about 9.0,which is similar to white corundum‘s.