Assertion: oyster's pearl | /r/HasProperty | rare
Facets:
value: very
type: DEGREE
value: before the days of cultured pearls
type: TEMPORAL
Source sentences:
text: Pearls created in the wild are rare and expensive.
text: Fine quality natural pearls are very rare jewels.
text: The most valuable pearls occur spontaneously in the wild, but are extremely rare.
text: Natural (or wild) pearls, formed without human intervention, are very rare.
text: Before the days of cultured pearls, black pearls were rare and highly valued for the simple reason that white pearl oysters rarely produced naturally black pearls, and black pearl oysters rarely produced any natural pearls at all.
text: The black cultured pearl is rare when compared to Chinese freshwater cultured pearls, and Japanese and Chinese akoya cultured pearls, and is more valuable than these pearls.
text: Large, perfectly round pearls are rare and highly valued.
text: If natural pearls are rare, it’s not just because of the fact that only a few oyster species are capable of producing them, but also because of the duration it takes for the formation process.
text: Being very rare, these pearls come with an astounding price tag.