Assertion: stone | /r/HasProperty | rare
Facets:
value: extremely
type: DEGREE
Source sentences:
text: One of the world’s rarest gemstones, gem-quality grandidierite above 2 carats is extremely rare.
text: Stones that lack surface breaking fissures are extremely rare and therefore almost all emeralds are treated ("oiled", see below) to enhance the apparent clarity.
text: Gem is a rare mineral that is highly priced.
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: These days, all gemstones are considered precious since they are all rare and there is a limited supply of them.
text: This gemstone is rare and is only found in Espirito Do Sant Brazil.
text: Stones that show a dramatic color change and strong colors (e.g. red-to-green) are rare and sought-after, but stones that show less distinct colors (e.g. yellowish green changing to brownish yellow) may also be considered “alexandrite” by gem labs such as the Gemological Institute of America.
text: A gem is a rare mineral or an unusual form of some mineral that is appreciated for its beauty.
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.