Assertion: amethyst | /r/HasProperty | one of the five gemstones
Facets:
Source sentences:
text: In the Old World, amethyst was considered one of the Cardinal gems, in that it was one of the five gemstones considered precious above all others, until large deposits were found in Brazil.
text: Amethyst is mentioned in the Old Testament as one of the twelve stones representing the twelve tribes of Israel and was also one of the twelve gemstones adorning the breastplate of the high priest Aaron (Exodus 39).