Phillips, in association with Canadamark, recently showed off what’s being described as the largest diamond ever mined in North America.
The yellow diamond has yet to be named, though it’s currently nicknamed “552” for its weight in carats.
It was discovered at the Diavik Mine in Canada last October.
The diamond was on display at the Phillips galleries in New York from Jan. 31 through Feb. 3.
“As of yet, the stone must be thoroughly examined and cut before being graded and sold,” according to a press release from Phillips.
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552 is ranked 25th on the list of the world’s largest rough diamonds, just ahead of the Lesotho’s Letseng Star, weighing 550 carats.
“It has been determined that the age of this diamond is approximately 3.1 billion years old, making it older than a vast majority of diamonds unearthed in this region of Canada,” according to Phillips.