By WETA Workshop. The 1:1 scale Essence Vial joins Weta Workshop's exquisitely detailed range of Jim Henson's Dark Crystal collectibles; a range that pays homage to the richly layered, fantastical world of Thra. Prop replica features LED lights. Cast a sinister glow from your vial by switching on the light-up essence effect. Requires one CR2032 cell battery (not included).