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Click Last search term was 'world's largest opal'.
A large gem-grade opal sold for 172 million won at an auction in the United States.
Named 'Americus australis', this opal is larger than a brick and weighs over 11,800 carats.
According to 'Alaska Premier Auction', which held an auction, it is known to be the largest opal ever discovered.
This is a precious item from the Brandt family, who owns a gold mine in Alaska and has been in the jewelry business for generations.
It was bought from an Australian opal dealer in the late 1950's by an adult in the family and has been stored ever since.
The large opal is split in two, and it is said that it is because of the practice of splitting and checking the quality of jewelry in the past.
Netizens who saw this responded, "It looks like a brick on the outside, but when you cut it, it's so beautiful!", "The opal that takes on various colors depending on the direction you look at it is very attractive."