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- Corundum - Wikipedia
Corundum is a crystalline form of aluminium oxide (Al2O3) typically containing traces of iron, titanium, vanadium, and chromium [3][4] It is a rock -forming mineral
- Corundum: Use as a Gemstone, Abrasive, Refractory
What is Corundum? Corundum is a rock-forming mineral that is found in igneous, metamorphic, and sedimentary rocks It is an aluminum oxide with a chemical composition of Al 2 O 3 and a member of the trigonal crystal system
- Corundum | Properties, Formation, Uses - Geology Science
Corundum is a mineral that is primarily composed of aluminum oxide (Al2O3) and is one of the naturally occurring crystalline forms of aluminum oxide It is a very hard mineral and is commonly used as an abrasive in various industrial applications
- Corundum: Mineral information, data and localities.
Corundum is used as an abrasive ("Emery"), and the gem varieties of corundum are better-known as Ruby and Sapphire
- GIAs Gubelin Gem Project: Corundum
Originating historically in southeast and central Asia, and more recently in eastern Africa, these colored varieties of the mineral corundum have been much sought as gems because of their rarity, color and durability
- Corundum | Aluminum Oxide, Gemstone, Abrasive | Britannica
Corundum, naturally occurring aluminum oxide mineral (Al2O3) that is, after diamond, the hardest known natural substance Its finer varieties are the gemstones sapphire and ruby (qq v ), and its mixtures with iron oxides and other minerals are called emery (q v )
- Corundum Value, Price, and Jewelry Information
Next to diamond, corundum is the hardest mineral known and is very compact and dense, with no cleavage As a result, corundum is one of the best of all jewelry stones, especially star corundum, which is tough as well as scratch-resistant
- Corundum Factsheet and Corundum Mineral Information
Due to natural corundum's popularity and high value, synthetically produced gem corundum has been used as an inexpensive substitute for many years Corundum is also used as an abrasive
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