This comes with a COA for the necklace as can be seen take a look at the pictures for details.
The neckless has the
COA the necklace has BEEN STAMPED ON THE BACK MODE’LE DE’POSE’ ET BREVETE …the Dilithium crystal did not come with a coa see pictures for a cosmetic once over
COA has been signed by a member of the Doohan family
could not find the cap to the Little bottle of Dilithium Hi there - to help you out with your listing, the necklace was used in Deep Space Nine in Season 2 Episode 16 "Shadowplay." Here's an example of one of the villagers wearing that type of necklace. This is a message from a eBayer who took the time to trace the origins of the necklace