Answer | Crossword Clue |
---|---|
TOPAZ | It's between quartz and sapphire on the Mohs scale of hardness |
TOPAZ | It's 8 on the Mohs scale of hardness |
TALC | It's 1 on the Mohs scale of hardness |
APATITE | It's 5 on the Mohs scale of hardness |
QUARTZ | It's 7 on the Mohs scale of hardness |
GARNET | It's 10 on the modified Mohs scale of hardness |