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Noun:

कोरन्डम,

corundum's Usage Examples:

Have a look on the color wheel to see what red corundum is called.

The following precious stones are reported: corundum (rubies and sapphires), beryl, topaz, zircon, garnet, amazon-stone, tourmaline, often in large crystals, and variously coloured quartz, also often found in crystals of great size.

The great corundum deposits ofCorundumHill,Macon county,N.C.,have yielded good sapphires, and they are found also at Cowee Creek in the same county.

Of the less important minerals, Canada is the world's chief producer of asbestos and corundum.

In 1893, as the result of an attempt to make diamond by the action of sulphur on highly carburetted cast iron at 450°-500° C. he obtained a black powder too small in quantity to be analysed but hard enough to scratch corundum.

There are indications of sapphires and other forms of corundum.

In emery, magnetite in a granular form is largely associated with the corundum; and in certain kinds of mica magnetite occurs as thin dendritic enclosures.

SAPPHIRE, 1 a blue transparent variety of corundum, or native alumina, much valued as a gem-stone.

Corundum indeed is abundantly met with in the eastern half of Liberia.

Purple corundum, or sapphire of amethystine tint, is called Oriental amethyst, but this expression is often applied by jewellers to fine examples of the ordinary amethystine quartz, even when not derived from Eastern sources.

corundum's Meaning':

very hard mineral used as an abrasive

Synonyms:

emery, alumina, aluminum oxide, mineral, sapphire, corundom, aluminium oxide, ruby,

Antonyms:

organic, achromatic,