None of these stories seem to actually have the items stolen. Most keep implying it was the three diamonds: Regent, Sancy, and Hortensia.

However, Sky News has an actual list. [1]

[1] https://news.sky.com/story/louvre-museum-in-paris-closed-aft...

Stolen and not retrieved

  • Tiara from the set of Queen Marie-Amelie and Queen Hortense (img in article)[1]
  • Necklace from the sapphire set of Queen Marie-Amelie and Queen Hortense (img in article)[1]
  • Earring, from the pair belonging to the sapphire set of Queen Marie-Amelie and Queen Hortense (img in article)[1]
  • Emerald necklace from the Empress Marie Louise set (img in article)[1]
  • Pair of emerald earrings from the Empress Marie Louise set (img in article)[1]
  • Brooch known as the "reliquary brooch" (img)[2]
  • Tiara of Empress Eugenie (also referred to as a "diadem") (img)[3]
  • Large corsage bow brooch of Empress Eugenie. (img in article)[1]

Stolen and found outside, broken

  • Crown of Napoleon III's wife, Empress Eugenie (img)[4]

[2] https://thefrenchjewelrypost.com/content/uploads/2016/09/san...

[3] https://thefrenchjewelrypost.com/content/uploads/2016/09/san...

[4] https://thefrenchjewelrypost.com/content/uploads/2016/09/san...

EDIT: AP article appears to have been updated (at time of edit 8:25 PM GMT). Now lists items. Original comment was written ~7:00 PM GMT.