Shapeshifting locket

The shapeshifting locket was an accessory the Rakhari Croden was wearing when he visited Deep Space 9 in 2369.

He told the security chief Odo, a shapeshifter, that he got this locket from a colony of shifters who once lived on his homeworld of Rakhar. In fact this locket was a key to a stasis pod in which Croden's daughter Yareth was kept until Croden released her. 

Background
The shapeshifting locket was designed by Rick Sternbach who drew the sketch for this prop. (DS9 Season 1 DVD special feature "Deep Space Nine Sketchbook")