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real ruby jewelry Corundum, the king of beautiful colored gems

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There are many colors of corundum. Mezi nimi, the red corundum is the gem Ruby, which is the most expensive among colored gemstones, so it is regarded as the “King of Gems”; blue corundum is the sapphire we know as Sapphire, and other colors of corundum are also pink Color, fialová, žluť, pomerančový, green, atd.

In addition to red and blue, the English names of some corundum are called by the color of the English plus Sapphire. The yellow corundum is Yeliow Sapphire, the orange corundum is called Orange Sapphire, but in the Chinese name, both yellow and orange corundum are called yellow gems; purple corundum is called Purple Sapphire or Violet Sapphire in English; green corundum is called Green Sapphire; Pink corundum does not belong to ruby, so it cannot be called Ruby, but Pink Sapphire; there is also a rare corundum named Padparadschah in Ceylon, it is a very bright pink orange, and the output is not much price Also very high.

Corundum is a mineral with a chemical composition of aluminum oxide. The English name Corundum is derived from an ancient Indian word Corund. It was originally an unknown mineral name. Now Corundum is the name of corundum in gemology and mineralogy. Corundum has a refractive index of 1.776-1.770, a birefringence difference of 0.008, a specific gravity of 4.00, a tvrdost 9, which is second only to the highest diamond. It is the hardest colored gemstone. Non-gem grade corundum is also used for industrial grinding or Polished material.

 

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