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Diamond is a solid form of the element carbon with its atoms arranged in crystal structure called diamond cubic. At room temperature and pressure another form of solid form of carbon is graphite is the chemically stable form, but diamond never coverts to it. Cash For Diamond has the highest hardness as compared to any natural material, due to which it is used as major industrial applications such as cutting and polishing tools. Diamond also has relatively high optical dispersion. Diamonds have been adapted for many uses because of the material's exceptional physical characteristics. Most notable are its extreme hardness. It is the hardness depends on its purity, crystalline perfection and orientation. Unlike many other gems, it is well suited to daily wear because of its resistance to scratching - perhaps contributing to its popularity as the preferred gem in engagement or wedding rings which are often worn every day. Somewhat related to hardness is another mechanical property is toughness, which is a materials ability to resist breakage from forceful impact. 

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The pure diamond should transmit visible light and appear as a clear colorless crystal. Colors in diamond originate from lattice defects and impurities. The most familiar uses of diamonds today are as gemstones used for adornment and for industrial uses it is used for cutting hard materials. A large trade in gem-grade diamond exists. Although most of gem-grade diamonds are sold newly polished, there is a well established market for resale of polished diamond In Noida . One hallmark of the trade and diamond is its remarkable concentration, wholesale trade and diamond cutting is limited to just few location. In 2003, 92% of the world's diamond were cut and polished in Surat.  The production and distribution of diamonds is largely consolidated in few key players, and concentrated in traditional diamond trading centers, the most important being is Antwerp, where 80% off all rough diamonds, 50% of all cut diamonds combined are handled