Assertion: amethyst's color | /r/HasProperty | vibrant
Facets:
Source sentences:
text: It owes its vibrant color to the presence of iron or manganese (sometimes both) when forming in fissures within igneous rocks from nearly all parts of the globe.
text: It owes its vibrant color to the presence of iron or manganese (sometimes both) when forming in fissures within igneous rocks from nearly all parts of the globe.