The world's largest diamond "Foxfire" is being exhibited at the Smithsonian's National Museum of Natural History in the state of Washington.

The 187 carat diamond was discovered in the frozen Diavik Diamond Mine at the Northwest Territories of Canada in 2015. Before its discovery, miners had only collected smaller items in the area. Unlike other large stones, this diamond has survived crushing by equipment due to its flat shape.

The name "Foxfire" was derived from the aboriginal description of the northern lights shining over the mining area, like a fox tail illuminating the Arctic sky.

Deepak Sheth invested in the stone in June and placed it in a black tray at the museum this Thursday together with the Hope diamond. This nature's artwork will remain at Smithsonian for public viewing until Feb. 16.

"Gems have this incredible draw for people. We're going to unveil the Foxfire in a room full of visitors. We like doing it that way. We get to share the excitement we feel with the public," the gem's owner said. The launch of the exhibition was attended by curator Sheth and Jeffrey Post of the National Gem and Mineral Collection.

"We are deeply honored to have been invited to exhibit the Foxfire here, next to the Hope diamond." Sheth added that the exhibition "means a great deal to me and my family," the curators said.

The world's largest uncut diamond "Firefox" is regarded as "the finest legacy of a mine that once existed on the frozen edge of the world." Operations in the Diavik Diamond Mine will end in 2030.