Assertion: natural citrine | /r/HasProperty | rare
Facets:
value: compared to amethyst
type: OTHER
value: very
type: DEGREE
Source sentences:
text: Natural citrine is very rare, in fact almost all the material offered on the market under that name is not natural citrine, but heat treated amethyst.
text: Natural citrines are rare; most commercial citrines are heat-treated amethysts or smoky quartzes.
text: Natural citrines are rare.
text: Natural citrine is rare.
text: Natural Citrine is rare and many times can look like smokey quartz, making it even harder to identify correctly.
text: Natural citrine is rare compared to amethyst or smoky quartz, both of which are often heated to turn their natural color into that of citrine.
text: Natural citrine is rare, so the piece you’re giving is probably an amethyst treated with heat to change its color.