Police say that the reality star's jewellery - worth millions of pounds - could have also been re-cut.
A member of the enquiry team told the French news channel BFM TV channel that Kim "is unlikely to get them back".
The stolen items include the €4 million diamond engagement ring given to the 36-year-old Keeping Up With The Kardashians star by her husband, rapper Kanye West.
All of it was taken during a robbery at the mum-of-two’s apartment in the French capital last October.
Meanwhile, it has emerged that the upcoming all-female Ocean's Eight film has just Kim Kardashian to the cast in a cameo role.
The reality TV star and her half-sister Kendall Jenner will make an appearances in the film.
One scene in the film features a jewel robbery at New York's annual Met Gala - an event packed with celebrities.