... and steel smelting, cement rotary kiln and gla Top-grade Electrofused SpinelOverview Spinel is a mineral composed ... octahedron and rhombic dodecahedron. They have varied colors, colorless, pink, red, purple, light purple, deep blue, blue, ... blue-violet, blue spinel and so on. Pink and red spinel aglow red fluorescence when in the ... and glass industry furnaces chaoyue supply top grade electrofused spinel