Assertion: alexandrite | /r/HasProperty | rare
Facets:
value: very
type: DEGREE
value: because of the unique properties
type: CAUSE
Source sentences:
text: Alexandrite Is Extremely Rare
text: Alexandrite is a rare gemstone that belongs to the family of mineral called Chrysoberyl.
text: Alexandrite, a rare stone, is considered to have regenerative power.
text: Alexandrite is a rare material, only found in very small deposits.
text: Alexandrite is a rare color change and chromium-bearing variety of chrysoberyl.
text: Alexandrite is a rare kind of Chrysoberyl that changes color from blue-green to purple-red.
text: Alexandrite is an excellent investment stone since it is definitely considered a "Very Rare" gem.
text: This is typically the only variety traded as just 'chrysoberyl', while other varieties of chrysoberyl are traded under very specific names, which include both chrysoberyl cat's eye (cymophane), the chatoyant variety of chrysoberyl; and alexandrite, a rare color change variety named after Russian Czar Alexander II.
text: Alexandrite is another very rare gemstone of chrysoberyl.
text: Alexandrite in sizes over three carats are very rare.
text: In terms of clarity, alexandrite is comparable to ruby, with clean faceted stones in sizes of one carat being rare and sizes over a carat and especially above 2 carats are extremely rare.
text: The cause of the change of color is quite different in these two stones and since Alexandrite is particularly rare and expensive it would be more likely that some unscrupulous dealer is trying to pass off Andalusite as Alexandrite than the other way round!
text: Alexandrite is a very rare gemstone because of the unique properties that allow it to change colors.
text: Alexandrite is an extremely rare gemstone.
text: Alexandrite is pretty rare gemstone mostly because it was discovered in 19th century.