Assertion: spodumene | /r/HasProperty | a real gem cutter's challenge
Facets:
value: due to its perfect cleavage
type: CAUSE
value: due to pleochroic nature
type: CAUSE
value: due to splintery fracture
type: CAUSE
Source sentences:
text: Due to its perfect cleavage, splintery fracture and pleochroic nature, spodumene is considered a real gem cutter's challenge.