Corundum is an aluminum oxide mineral, renowned for its exceptional hardness, second only to diamond. Its most valuable and well-known varieties are the deep red ruby and the deep blue sapphire, which are among the most desirable gemstones in the world. Pure corundum is colorless, but minor impurities of metals such as chromium (for ruby) or iron and titanium (for sapphire) give it an impressive variety of colors. In addition to the classic red and blue, corundum can be pink, yellow, green, purple, orange (padparadscha) and even exhibit color changes or asterism (starry) effects.
Due to its extraordinary hardness (9 on the Mohs scale) and wear resistance, corundum is widely used not only in jewelry, but also in industry as an abrasive and for the manufacture of high-tech components (e.g. watch glass, lasers).
Corundum is found all over the world, including Myanmar, Sri Lanka, Thailand, India, Madagascar and Australia, where the highest quality specimens come from.
Corundum is prized by collectors for its beauty, variety of colors, historical significance and, of course, its exceptional physical properties, making it a true treasure of nature. Its durability and luster ensure that corundum jewelry will retain its appeal for generations to come.
Varieties
Jewelry with this mineral
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