Assertion: tourmaline | /r/HasProperty | the most versatile gem
Facets:
value: possibly
type: DEGREE
value: in terms of color variations
type: OTHER
Source sentences:
text: Tourmaline in general is found on every continent and is possibly the most versatile gem in terms of color variations.
text: Red and pink tourmalines have the lowest magnetic susceptibilities among the elbaites, while tourmalines with bright yellow, green and blue colors are the most magnetic elbaites.