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.
In an alternate timeline, Yerdrin Lek claimed to be a dealer in flamegems that had jettisoned his cargo when captured by the Enterprise NX-01 in 2165. (ENT: "Twilight")