Assertion: alexandrite | /r/HasProperty | discovered in the ural mountains
Facets:
value: on april
type: TEMPORAL
value: in russia
type: LOCATION
Source sentences:
text: The alexandrite was first discovered in the Ural Mountains in Russia and was claimed as the national stone of the country for its red and green tones, also the colors of Imperial Russia.
text: It was discovered in 1839 in Ural Mountains and it is most expensive due to its rarity.
text: Alexandrite was first discovered in Czarist Russia, in the Ural mountains, on April 3 1834, when several crystals were found in Tokovanya deposits.