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Corundum is very hard. It serves as the index mineral with a hardness of nine on the Mohs Hardness Scale. It is the third hardest mineral known, with diamond and moissanite being the only minerals with a greater hardness.
This high hardness makes corundum especially useful as an abrasive. Crushed corundum is screened to produce uniformly-sized grits and powders. These are used as grinding media and used to manufacture polishing compounds, sand papers, grinding wheels and cutting tools.
The costs of manufacturing abrasives have been declining through innovation. Synthetic corundum is increasingly being used as an abrasive instead of natural corundum.
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What are some important uses for corundum?
jewlery
Why is corundum magnetic?
Corundum is not magnetic.
What is corundum used in?
The overwhelming use, by far, of corundum is in the manufacture of abrasives--sandpaper, grinding wheels, etc. Gem grade corundum is used in jewelry.
What color is corundum?
***Pure corundum is transparent and colorless but most specimens contain some transition elements substituting for aluminum, resulting in the presence of color. Substitution of Chromium results in a deep red color; such red corundum is known as ruby.corundum is a dark red, blue and yellow colors
What mineral can corundum scratch?
Corundum can scratch almost any mineral that isn't diamond.
What are some important uses for corundum?
jewlery
What are some common uses of corundum?
Corundum has some electrical uses, and non gem quality material, such as emery, is extensively used as an abrasive because of its high hardness.
What important uses does corundum have?
Corundum is used for jewlery
What are the uses corundum?
Corundum can be used for sandpaper,jewelry,grinding wheels,etc.
What is the value of corundum?
The value of the mineral corundum will vary according to its appearance. Gem quality corundum is highly valued. Non gem quality corundum has many industrial uses and is much less highly valued.
What is the plural of corundum?
Corundum.
Why is corundum magnetic?
Corundum is not magnetic.
Is corundum hexagonal or cubic?
Corundum ( (Al_2O_3) ) is hexagonal in crystal structure.
What is the hardest rock in the world besides diamond?
The hardEST is a diamond, and some other hard ones are corundum and topaz. If you look up Moh's hardness scale, it will show you some.
What do you call a red corundum?
Red corundum is called ruby.
What is the chemical name for corundum?
Corundum is aluminium oxide, Al2O3.
What are facts about the mineral corundum?
Pure corundum is clear in color.
