Assertion: alloy | /r/HasProperty | refined to better purity
Facets:
Source sentences:
text: ^ [ citation needed ] is that it be applied to alloys that have been refined to 99.9% or better purity ("3 nines fine").
text: 24 karat gold is fine gold (24/24 parts), and the engineering standardis that it be applied to alloys that have been refined to 99.9% or better purity ("3 nines fine").