Assertion: topaz | /r/HasProperty | hard
Facets:
value: very
type: DEGREE
value: on the mohs hardness scale
type: OTHER
value: with being more valuable
type: OTHER
value: with a range of natural colors
type: OTHER
Source sentences:
text: Topaz is very hard, but it is also brittle and cleaves easily.
text: Topaz is a hard and durable gemstone, and will not dissolve in most chemical
text: Topaz is a hard stone with a range of natural colors, with some colors being more valuable.
text: Although topaz is a very hard gemstone, an 8 on the Mohs scale of hardness, it can be split with a single blow and should be protected from hard knocks.
text: Topaz is a very hard material - 8 on the Mohs hardness scale - and blue topaz is a very pretty stone that is available in a wide range of vivid hues with a striking vitreous luster.
text: The first thing is that while topaz is very hard, it is not the most durable gemstone.
text: While topaz is quite hard, its toughness and resistance to blows is considered poor because of its perfect directional cleavage.
text: Topaz is a hard and durable gemstone, and will not dissolve in most chemical solvent s.