 Antimony is a silvery , lustrous gray metalloid that has a Mohs scale hardness of 3 . Thus pure antimony is too soft to make hard objects ; coins made of antimony were issued in China 's Guizhou province in 1931 , but because of their rapid wear , their minting was discontinued . Antimony is resistant to attack by acids . 
 Antimony <a href='drop_aux' title='1'><mark>is</mark></a>a silvery , lustrous gray metalloid <a href='null_relcl' title='2'><mark>that</mark></a><a href='got' title='3'><mark>has</mark></a> a Mohs scale hardness of 3 . Thus pure antimony is too soft to make hard objects ; coins made of antimony <a href='uninflect' title='4'><mark>were</mark></a> issued in China <a href='null_genetive' title='5'><mark>'s</mark></a>Guizhou province in 1931 , but because of their rapid wear , their minting was discontinued . Antimony <a href='drop_aux' title='6'><mark>is</mark></a>resistant to attack by acids . 
Antimony a silvery , lustrous gray metalloid got a Mohs scale hardness of 3 . Thus pure antimony is too soft to make hard objects ; coins made of antimony was issued in China  Guizhou province in 1931 , but cuz of their rapid wear , their minting was discontinued . Antimony resistant to attack by acids .