Rings diamonds - Learn About Diamonds Before Buying
Diamond is the hardest known naturally occurring stuff, scoring 10 on the relative Mohs scale of mineral hardness and having an total hardness value of between 167 and 231 gigapascals in a number of tests. Diamond’s hardness has been known ever since antiquity, and is the origin of its name. Nevertheless, aggregated diamond nanorods, an allotrope of carbon first synthesized in 2005, are now known to be even harder than diamond.