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Corundum is found on all continents particularly in Burma (modern day Myanmar), South Africa, Canada, The Ural Mountains in Western Russia, and the United States. The biggest deposit was found in Sri Lanka.

Corundum, which is also called "ruby" when red and "sapphire" when any other color, has been known since prehistoric times.

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11y ago

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Related Questions

What is the plural of corundum?

Corundum.


What is corundum oxide?

Corundum oxide is a compound commonly known as aluminum oxide. It is a crystalline form of aluminum oxide with a chemical formula Al2O3. Corundum oxide is a very hard material, second only to diamond, and is frequently used in various industrial applications such as abrasives, catalysts, and refractory materials.


Is corundum hexagonal or cubic?

Corundum ( (Al_2O_3) ) is hexagonal in crystal structure.


Which crystal system does corundum have?

Corundum is in the trigonal crystal system.


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.


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.


Can quartz scratch corundum?

According to the Mohs scale of mineral hardness, quartz (7) will not scratch any mineral with a higher number on the scale. Corundum is listed at 9. Therefore quartz will not scratch corundum, but corundum can scratch quartz.


Is corundum the hardest rock?

Corundum is a mineral, therefore it could not be the hardest rock.