Crossword puzzle clue "symbol of hardness"

Here are the possible solutions for symbol of hardness clue

Answer
Clue
Relevancy
granite
Clue
Symbol of hardness
Rock associated with hardness
Definition
a highly felsic igneous rock
nails
Clue
Symbol of hardness
Symbol of hardness.
Definition
NAIL, to fasten with a long slender piece of metal
steel
Clue
Hardness symbol
apatite
Clue
It's 5 on the Mohs scale of hardness
Definition
a mineral, calcium fluoride phosphate, used as a fertilizer
firmness
Clue
Hardness
Definition
the state of being firm
garnet
Clue
It's 10 on the modified Mohs scale of hardness
Definition
a name given to various silicates, some semiprecious

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