NOT KNOWN DETAILS ABOUT CERIUM OXIDE

The commonest type of crystalline alumina, α-aluminium oxide, is named corundum. When trace factors enable it to be appear crimson it is called ruby, but all other colorations slide beneath the designation sapphire. Corundum provides a trigonal Bravais lattice with an area group of R-3c (quantity 167 during the Global Tables).It only demands Speci