Assertion: tourmaline | /r/HasProperty | durable
Facets:
value: quite
type: DEGREE
Source sentences:
text: Tourmalines are hard and durable and make fine ringstones, especially when set with small diamonds.
text: Tourmaline is a durable mineral and can be found in minor amounts as grains in sandstone and conglomerate, and is part of the ZTR index for highly weathered sediments.
text: Don’t get me wrong, tourmaline is quite durable and it will last for years even if you curl your hair every day.