The ruby is a pink to blood-pink coloured gemstone, a wide selection of the mineral corundum (aluminium oxide). The pink shade is prompted mainly by the presence of the factor chromium. Its name comes from ruber, Latin for red. Different styles of gem-high quality corundum are known as sapphires. The ruby is taken into account one of many four treasured stones, together with the sapphire, the emerald, and the diamond.
Costs of rubies are primarily determined by color. The brightest and most dear "pink" referred to as pigeon blood-purple, commands a huge premium over other rubies of comparable quality. After coloration follows readability: much like diamonds, a transparent stone will command a premium, however a ruby without any needle-like rutile inclusions might point out that the stone has been treated. Minimize and carat (weight) also determine the price.
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