Glitteryll
this was an unusual mixture of glitterstim and ryll spices, created on Nar Shaddaa during the last decades of the Old Republic. The Corporate Sector Authority was rumored to have been interested in further development of this substance, and the Jedi Knights dispatched Quinlan Vos and his apprentice, Aayla Secura, to investigate. They were both captured and had their memories erased, in order to cover up the secret of glitteryll. After Quinlan returned to Ryloth with Vilmarh Grahrk, they discovered that energy spider eggs from Kessel had been transported to Ryloth and stored in the ryll caves. The spiders were fed ryll spice, and then exuded webbing made almost purely of glitteryll. Quinlan later learned that Asante' Vos had been one of the parties behind the development of glitteryll. After the energy spiders killed Asante', Quinlan destroyed all the spiders in order to completely cut off the supply of glitteryll.