Limestones range in hardness from 3-7 on the ten-point MOHS scale (diamonds are 10;
(Limestones; range; L:in hardness; from 3-7 on the ten-point MOHS scale (diamonds are 10) (diamonds; are; 10)
Limestones diamonds
range are
L:in hardness from 3-7 on the ten-point MOHS scale (diamonds are 10
10