Tandgor gems.
Tandgor gems were expensive, glowing red gemstones[1] from the Outer Rim planet Tandgor.[2] Han Solo and Chewbacca smuggled them once.[1]
Behind the scenes
These gems only appear in a Star Wars Tales story which level of canonicity is ambiguous. However, the existence of the planet Tandgor was confirmed in The Essential Atlas.
Appearances
"Planet of the Dead" — Star Wars Tales 17 (First appearance)
Notes and references
In other languages