Alternate timeline(covers information from an alternate timeline)
A Rigelian flamegem was a precious jewel from the Rigel system. They were illegal in the region of space near the Mutara sector during the 22nd century.
In an alternate timeline, Yerdrin Lek claimed to be a dealer in flamegems that had jettisoned his cargo when captured by Enterprise NX-01 in 2165. (ENT: "Twilight")