Hardness of sodium chloride crystal in moh's scale?

Sodium chloride (table salt) has a hardness of 2-2.5 on the Mohs scale. This scale measures the scratch resistance of various minerals through the ability of a harder material to scratch a softer one. As a result, sodium chloride can be easily scratched by materials with a higher hardness, such as gypsum (hardness 2) and calcite (hardness 3).