Position: Diamond knowledge
The hardness of diamond- Diamond is the hardest material in nature, be rub family name hardness of 10 class exclusive mineral, be known as the king ” of “ hardness so. Its fight rub 140 times hardness is corundum, exceed 1100 times of quartz, its conseq...
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- The brief introduction of diamond
- Diamond Zuànshí, pass the diamond of burnish namely, weigh diamond again, mineral name is diamond. English is Diamond, result from ancient Hellenic Adamant, means is hard inviolable material.
① points to lapidary class diam...
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- The formation of diamond reachs discovery
- Diamond, namely mineralogical medium diamond, it is carbolic element is formed via geological action, former unripe mine basically is Jinbaili in cliff and porphyry of potassium magnesian brilliant, diamond discovers the earliest at India,...
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- Perfect diamond cuts worker worker
- One, the limits that academic and perfect diamond cuts worker worker
The Ideal Cut that Round Brilliant circle gets bright travel is perfect cut worker worker, it is a source from 1919 the technology of Marcel Tolkowsky is academic a...
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- The story of diamond
- The mankind extracts the history that uses diamond already had a few chiliad, but the lapidary class diamond that is more than 20 carat from of old is very infrequent. And the diamond that is more than 100 carat is being inspected national...
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- About the hardness of diamond
- According to rub standard of family name hardness (Mohs Hardness Scale) divides 10 level in all, diamond (diamond) for the superlative degree the 10th class; If its hardness is the penknife about 5.5, schilling is about 3.5 to 4, fingernail...
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- Natural diamond and the distinction that synthesize diamond
- Natural diamond is to be under the earth's surface the deepness of 200 kilometers is in extreme high temperature (about 1500. C) with high pressure (about 50000 atmosphere) grow below the condition. But people can have issued the conditiona...
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- African star - - the biggest diamond on the world
- In nature, diamond shows round graininess or drossy shape to yield mostly, complete single crystal does not see more. And its bead diameter normally not big also, small person be like grain of rice or smaller, the diamond of especially big...
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