Assertion: pink tourmaline | /r/CapableOf | rank at a 7.5
Facets:
value: out of 10
type: OTHER
value: on the mohs scale of hardness
type: OTHER
Source sentences:
text: On the Mohs scale of hardness, pink tourmaline ranks at a 7.5 out of 10, making it one of the hardest gemstones on the market today.