Ruby Gemstone


A ruby is a pink to blood-red colored gemstone, a variety of the mineral corundum ,Ruby is one of the traditional cardinal gems, together with amethyst, sapphire, emerald, and diamond[ The quality of a ruby is determined by its color, cut, and clarity, which, along with carat weight, affect its value. The brightest and most valuable shade of red called blood-red or pigeon blood, commands a large premium over other rubies of similar quality. Rubies have a hardness of 9.0 on the Mohs scale of mineral hardness, all natural rubies have imperfections in them, including color impurities and inclusions The Mogok Valley in Upper Myanmar (Burma) was for centuries the world's main source for rubies. The Republic of Macedonia is the only country in mainland Europe to have naturally occurring rubies. Macedonian rubies have a unique raspberry color. Rubies, as with other gemstones, are graded using criteria known as the four Cs, namely color, cut, clarity and carat weight. Rubies are also evaluated on the basis of their geographic origin. In the evaluation of colored gemstones, color is the most important factor. Color divides into three components: hue, saturation and tone. Hue refers to color as we normally use the term. The finest ruby is described as being a vivid medium-dark toned red. Secondary hues add an additional complication. Pink, orange, and purple are the normal secondary hues in ruby. Of the three, purple is preferred because it reinforces the red, making it appear richer.Purple also occupies a position on the color wheel halfway between red and blue. When a purplish-red ruby is set in yellow, the yellow neutralizes its complement blue, leaving the stone appearing to be red.

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