SEATTLE - A stolen Russian artifact, recovered in King County, was returned to Russian authorities in Moscow on Thursday.

Members of the U.S. Immigration and Customs Enforcement (ICE) returned a silver pendant with an engraved image of Peter The Great, who was the Czar of Russia from 1682 to 1725, to the Russians in a ceremony at the U.S. Embassy.

Ambassador John Beyrle said that what he called the "detective story" of the recovery of the rare artifact signaled increasing trust and cooperation between Moscow and Washington.

The pendant was among 1,200 historical items linked to Peter the Great that were given to the State Hermitage Museum in St. Petersburg, Russia in 1947. According to ICE, the pendant had been donated to the museum by the family of Czar Nicholas II.

The pendant was stolen from the State Hermitage Museum in July, 2006. A check also showed that some 200 exhibits, including jewelry and icons worth $5 million, were also stolen from the museum.

In May, 2009, Russian authorities learned that a pendant similar to the one stolen from the museum was being offered for sale by an antiques dealer in King County. The Russians contacted ICE for assistance.

ICE agents located and recovered the pendant and turned it over for authentication by experts in the Moscow Kremlin Museum.

"Artifacts of historical or cultural significance allow the public to experience a nation's heritage and these items shouldn't be offered as souvenirs for sale to the highest bidder," Leigh Winchell, special agent in charge of ICE's Office of Investigations in Seattle, said in a press release. "ICE is committed to working with our global law enforcement partners to investigate those who seek to benefit financially from this type of illegal activity."

The engraved pendant, which measures 2.6 by 1.7 cm and weighs about two grams, is believed to have been crafted by artisans in the central Russian province of Kostroma in the late 19th or 20th century.