free web permotion

here you can find new and old information of diamond


free counters

Tuesday, June 16, 2009

Diamond hardness

Diamond is the hardest natural material known, where hardness is defined as resistance to scratching.[12] Diamond has a hardness of 10 (hardest) on Mohs scale of mineral hardness.[13] Diamond's hardness has been known since antiquity, and is the source of its name.


DIAMOND © 2007 Template feito por Áurea R.C.