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Is amethyst a silicate or nonsilicate?
non-silicate. Sapphire is Al2O3, alumina or corundum, contaminants such as chromium give it color.
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.
Is antimony a silicate or non-silicate?
Antimony is an element, so it is neither silicate nor non-silicate
Is jasper a silicate mineral or a non-silicate mineral?
It's silicate.
Is amethyst a silicate or nonsilicate?
non-silicate. Sapphire is Al2O3, alumina or corundum, contaminants such as chromium give it color.
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 important uses does corundum have?
Corundum is used for jewlery
What do you call a red corundum?
Red corundum is called ruby.
What is the chemical name for corundum?
Corundum is aluminium oxide, Al2O3.
Which crystal system does corundum have?
Corundum is in the trigonal crystal system.
What are facts about the mineral corundum?
Pure corundum is clear in color.
What is the only mineral that can scratch corundum?
Diamond is the hardest mineral and is the only one that can scratch corundum. but in my opinion corundum will scratch corundum any mineral of the same hardness will scratch the other !
What do they call red corundum?
Red corundum is called ruby.
What percentage of rubies is corundum?
100% of rubies are corundum. "Ruby" is a name made up by the gem trade for the mineral known as corundum, when it is red.
