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 | 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 )
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 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
Corundum - Details and Facts Corundum is a mineral that is commonly found in metamorphic and igneous rocks It is composed of aluminum oxide and can be identified by its hardness and crystal structure Corundum has a hardness of 9 on the Mohs scale, making it one of the hardest minerals known to man