Diamond lost the tittle of hardest material.

According to the new scientfic research.A rare natural substance called lonsdaleite,which is made from carbon atom just like diamonds,has emmerged 58% more harder than gemstone.A team lead by zicheng pang and collegues at shanghai jiao tong university simulated how atoms in two substances belived to have promise as very hard materials would respond to the stress of a finely tripped probe pusing down on them.These rare minerals are formed when meteroids containing graphite hits the earth.