Two traces of DNA were found in one of the helmets and one of the gloves suspects left behind after a jewelry heist at the Louvre on Sunday, French police told ABC News.

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

Investigators hunting the gang behind the heist have also found traces of DNA samples in a helmet and gloves, prosecutors confirmed to NBC News.

In total, thieves stole about €88 million worth of jewels on Sunday, including a necklace Napoleon Bonaparte gave to Marie-Louise of Austria, the tiara, necklace and earrings of Queen Hortense, and a diadem, diamond bow brooch and reliquary brooch that once belonged to Empress Eugénie, wife of Napoleon III.

It took seven minutes for thieves to execute a brazen daylight heist at the famed Louvre museum. Here's how they did it

Experts say France's royal jewels may be gone forever after a daring heist at the Louvre. On Sunday, thieves stole eight pieces, including crowns and necklaces, in just four minutes.

The manufacturer posted a picture of the lift cordoned off by police tape at the side of the Paris landmark with the tagline "when you need to move fast".

A German company inadvertently embroiled in the Louvre Museum heist after one of its lifts was used in the theft is making the most of its free publicity - by launching a new advertising campaign.