Multiple Choice
Using the Mohs hardness scale below, which of the following statements is FALSE? 
A) A fingernail can scratch a sample of gypsum.
B) Diamonds are twice as hard as apatite.
C) Diamonds are more than seven times as hard as quartz.
D) Quartz cannot scratch anything made of diamond.
Correct Answer:
Verified
Correct Answer:
Verified
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