+Aluminum Oxide (Al₂O₃) is a chemical compound of [Aluminum](/wiki/aluminum) and oxygen, found naturally as the mineral corundum. Renowned for its exceptional hardness and high melting point, it forms the basis of precious [Gemstones](/wiki/gemstone) like sapphire and ruby, colored by trace elements.
+## See also
+- [Corundum](/wiki/corundum)
+- [Ceramics](/wiki/ceramics)
+- [Abrasive](/wiki/abrasive)
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