วันพุธที่ 5 สิงหาคม พ.ศ. 2552

Crystal Diamond

เขียนโดย kingkaew puengsri

A diamond is a crystalline form of carbon. A diamond in hardness and high dispersion of light, is particularly useful for industrial applications and jewelry. Diamonds are known as the minerals by physical properties. Thus, large abrasives because they can scratch diamond. This function can also say that a high gloss polish and maintain. About 120 million carats, 25 000 kilograms of diamonds dropped a year. These diamonds have a total of almost nine billion dollars. Unable to perform Translation:invalid text"Diamond", the name derives from an ancient Greek word that means "impossible to tame." Kleinod guarded by their use as religious symbols of India about 2500 years. "Diamond's a girl's best friend." They were often in drills and engraving tools since the beginning of human history for its physical properties. By improving the techniques of cutting and polishing of diamonds, the popularity since the early 19th century. Almost 4 times the amount of natural diamonds are syntheticly year. Synthetic diamonds are typically poor quality of the samples and the results are by industry class. Unable to perform Translation:invalid textMost natural diamonds in central and southern Africa. On the other hand, the essay, but important sources of minerals have been Russia, Canada, Brazil and Australia. In general, diamond dismantled volcanic son. Volcanic pipes are in the depths of the earth where high pressure and temperature enables the formation of crystals. Frequent subject of controversy, the extraction and sale of natural diamonds, has deep concerns about the sale of paramilitary groups in Africa. Unable to perform Translation:invalid textPreviosuly As mentioned earlier, humans have been able, for the diamond for many applications because of their exceptional physical properties. The most famous of all these devices is a diamond in extreme hardness.

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