Assertion: dendritic agate | /r/HasAspect | a hardness of 6.5 to 7
Facets:
value: like other types of chalcedony
type: OTHER
value: on the mohs scale
type: OTHER
Source sentences:
text: Like other types of chalcedony, dendritic agate has a hardness of 6.5 to 7 on the Mohs scale, a specific gravity of 2.59 to 2.67 and a refractive index of 1.530 to 1.540.