French police have gathered more than 150 DNA samples and fingerprints in the hunt for the thieves behind a daring daylight raid on the Louvre that saw eight royal jewels worth €88 million stolen.

In 1962, the Countess of Paris attended the wedding of fellow European royalty in Queen Marie-Amélie’s sapphires—which were snatched in what has become one of the worst thefts of its kind.

The theft of French crown jewels overshadowed the robbery of some $100,000 worth of historical coins from a museum dedicated to philosopher Denis Diderot.

Fox News senior foreign affairs correspondent Greg Palkot joins 'Fox & Friends' to discuss the reopening of the Louvre as authorities hunt for stolen jewels and French leaders face mounting security concerns.

The Louvre remained closed Monday after historic jewels were stolen in a daring daylight heist. Thieves used a basket lift to access the museum, smashed display cases, and fled with Napoleonic jewels.

The Louvre robbers may have smuggled stolen jewels by shoving them in their bodies back door, according to America’s most infamous jewel thief Larry Lawton. Larry shared his two cents after four thieves stole $102 million worth of jewels from the Louvre Museum on Sunday,

The only camera monitoring the exterior wall of the Louvre where they broke in was pointing away from the first-floor balcony that led to Gallery of Apollo housing the jewels, she said. "We failed these jewels," she said, adding that no-one was protected from "brutal criminals - not even the Louvre".

The glittering sapphires, emeralds, and diamonds that once adorned France's royals could well be gone forever, experts said Tuesday after a brazen, four-minute heist in broad daylight left the nation stunned and the government struggling to explain a new debacle at the Louvre.