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Ruby

2010-03-06

Ruby

The English name Ruby, from the Latin Ruber, meaning red. Ruby corundum mineral name.

Ruby the chemical composition of aluminum oxide (Al2O3), a result of containing chromium (Cr3 +) formed red to pink. Tarragona system. Crystal form barrel, short columnar, plate-like and so on. A collection of mostly granular or a compact block. Transparent to translucent, vitreous luster. Refractive index 1.76-1.77, double-refractive index of 0.008-0.010. 2 color obviously, non-homogeneous body. Sometimes has a special optical effects - Star effect will be irradiated by the light reflecting starlight links of london charms six radio, commonly known as "six-line." Hardness of 9, density 3.95-4.10 g / cubic centimeter. No cleavage, cleft developmental reasons. Ruby in the long-and short-wave UV light red and dark red fluorescence.

Ruby red among the most valuable is the color of the most concentrated, known as 'pigeon blood' gems, very precious. This almost could be called the strong bright crimson color, but also to reveal the true face of the ruby at a glance. Unfortunately, most of the ruby color radiate a light color, and with a feeling of powder, so with a pigeon Links of London blood ruby color, more valuable. In addition, as the shares of Ruby filled with a strong vibrant and rich and gaudy colors, the previous one that it is the embodiment of dead birds on their produce fervent fantasies. The origin of non-production of natural ruby rare, high-quality Burmese ruby is only one producer, and production is also being gradually reduced, and now can be said that virtually incapacitated, the large stone will no longer appear.

Ruby evaluation and purchase. Ruby's first evaluation and purchase factor is the color, followed by weight, transparency and clarity. Generally speaking, color purity, particle large, transparent, no or very few inclusions and flaws, processing fine, well-proportioned of the various parts of the upper Ruby faceted product. Myanmar rubies, as pigeon blood red color, uniform, transparent big, big grain, very few flaws and cracks. Sri Lanka, ruby, less coloration, the main varieties of Star Ruby. Thailand sharp bamboo pattern ruby, deep red, the color is not bright, relatively clean. Ruby has a brittle, afraid of percussion, beat, should pay attention when worn.

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