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 consequently unapproachable hardness cans be imagined.
Ought to point out: The diamond rigidity that says here is particularly big, it is to show the capacity of score of its resistance outside force is strong; But it has brittleness again, be afraid of a bang, bang or drop its will be arranged after bumping cleavage is broken. So although diamond is the hardest material in nature, but knock it possibly also with a hammer broken. Accordingly, adorn when diamond jewelry, should special attention is protected.
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