Assertion: chalcedony's color | /r/CapableOf | lead a rule of thumb
Facets:
value: to some of the problems
type: TRANSITIVE-OBJECT
Source sentences:
text: Color leads to some of the problems that arise when one is naming some materials jasper rather than chert: a "rule of thumb" (albeit based on one's subjective sense of and feelings about color) to which I subscribe, is "if the given rock exhibits attractive colors call it jasper, otherwise call it chert.