Assertion: stone's gemstone | /r/HasProperty | rare pieces of minerals
Facets:
Source sentences:
text: Gemstones are rare pieces of minerals that are found in the ground, which are then cut and polished to be used in jewelry and other decorative pieces.
text: This gemstone is rare and is only found in Espirito Do Sant Brazil.
text: Gemstones are rare pieces of minerals that are found in the ground, which are then cut and polished to be used in jewelry and other decorative pieces.