Global Corundum
Market: Overview
Corundum is
considered a crystalline form of aluminum oxide (Al
2O). It typically contains traces of vanadium, chromium,
iron, and titanium. It is also a rock-forming mineral. Corundum
is a naturally transparent material, which exhibits different colors when
impurities are intermixed in the mineral. Impurities include the presence
of transition metals in the crystal structure of corundum. According
to the Mohr’s scale of hardness, pure corundum has hardness of 9.0. It is
considered one of the durable gemstones.
Global Corundum
Market: Key Segments
The corundum
market can be segmented based on type, application, and region.
Corundum is available in all the colors of the rainbow; however, it is commonly
found as opaque crystal with dull color. Based on type, the corundum market can
be classified into emery (black), Padparadschah (pink and orange variety of
sapphire), ruby (pink or red), green sapphire, blue sapphire, star ruby, and
star sapphire, and others. Red corundum is called ruby, blue corundum is
called sapphire, while all other colors are called fancy sapphires.
Some varieties of corundum fluoresce under short wave and long wave UV light if
there is enough chromium in the crystal structure but little iron, which tends
to quench any emitted energy. Corundum can also be used in the preparation of
ornaments. Apart from ornaments, synthetic corundum is also used to produce
mechanical parts (tubes, bearings, rods, and other machined parts),
scratch-resistant optics, scratch-resistant watch crystals,
instrument windows for satellites and spacecraft (because of its transparency
in the ultraviolet to infrared range), and laser components. It is also
used in construction for sand blasting, grinding, and plunge cutting
applications.
Corundum is one of the hardest known mineral after diamond.
Artificial corundum can be manufactured as a specialty product. It can be
obtained by slow accretion and controlled growth on a boule in an ox-hydrogen
flame, particularly known as the Verneuil process.
One of the major restraints of corundum market is in displaying
the stone's vibrancy, the cut of sapphires and rubies is not as critical as
that for diamond. Zoning is caused to the corundum if it is not appropriately.
It would ultimately loose it luster, thereby making it dull. Corundum is a
capital intensive business. Corundum also requires polish. Thus, new
technologies and innovations are emerging to improvise the quality of corundum
and lower its costs.
In terms of region, North America constitutes major share of the
corundum market. Demand for artificial corundum market is high in the region
due to its lack of natural occurrence. Changing lifestyle and attraction toward
precious gemstones have boosted the demand for corundum market. Europe also
accounts for large share in terms of demand for the mineral. Demand for
corundum is especially high in Germany, Turkey, France, and the U.K. China is a
major manufacturer and consumer of artificial corundum in Asia Pacific. India,
Thailand, South Korea, and Japan are the key manufacturers of corundum in the
region. Natural corundum is mined in several countries such as India,
Australia, Myanmar, Japan, Cambodia, Sri Lanka, and Papua New Guinea in Asia
Pacific. Of late, countries in Africa have been producing corundum in large
quantities. Madagascar, Tanzania, and South Africa have rich reserves of
corundum. The usage of corundum is anticipated to increase in countries in the
Middle East and Latin America in the near future.
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Global Corundum
Market: Key Players
Key players operating in the corundum market include Alteo
Alumina Riken Corundum Co. Ltd., Swarovski Gemstones, Henge Group, and K.A.
Refractories Co. Ltd., Zhongtian Special Alumina Co., Ltd, Retek LTD, Xinyang
Jinbo Abrasives Co., Ltd., Rock & Gem company Ltd., and others.
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