Meanwhile, the Louvre’s director, Laurence des Cars, is set to make a much-anticipated appearance in front of France’s Senate Culture Committee to answer questions regarding the museum's security and what went wrong on Sunday when nine pieces were swiped from the museum’s Apollo Gallery.

Officials say an outdated surveillance system left the world-famous museum in Paris vulnerable despite years of warnings.

Master jeweler Stephen Portier said the Louvre robbers might recut the stolen gems, which would significantly decrease their value.

Thieves used a stolen truck-mounted moving lift to scale the Louvre and steal royal jewels worth over $100 million in a lightning-fast Paris heist.

Laurence des Cars is speaking for the first time since a gang of masked thieves - who remain at large - carried out Sunday's robbery.

Ariel Weil, mayor of central Paris, says it's obvious to him that the Louvre museum’s security system did in fact fail during Sunday's crown jewel heist. But that’s contrary to what the French culture minister,

French investigators continued to search for eight stolen items after unidentified thieves carried out a daring daytime heist at the Louvre.

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".