Alabaster is a relatively soft stone which measures 2.5 on the Mohs scale, the international standard for measuring the relative hardness of stone (diamonds are a 10, granite 6.5).
(Alabaster; is; a relatively soft stone which measures 2.5 on the Mohs scale, the international standard for measuring the relative hardness of stone (diamonds are a 10, granite 6.5)) (diamonds; are; a 10)
Alabaster diamonds
is are
a relatively soft stone which measures 2.5 on the Mohs scale, the international standard for measuring the relative hardness of stone (diamonds are a 10, granite 6.5)
a 10