Despite the undeniable value of the crystals of which these pokemon are composed, Paldea has never known any such thing as a Glimmora mine, and has historically made remarkably little use of the material so closely connected to Terastallization. This is because of their habitats, for they live in caves so hostile to organic life that even the most enthusiastic adventurer – or the most expendable slave – could not venture into then and come out alive, Tera Shards in hand. Indeed, so weak is the relationship between these pokemon and humanity that the connection of Glimmora to Tera Shards only passed out of the realm of popular legend into scientific proof within the lifetimes of most active Pokemon Professors.
The strange form of poisoning associated with Glimmora has long been known to Paldean medicine; the symptoms were first described among ancient treasure hunters who learned the truth about their crystals the hard way, but it is more commonly associated with villages once located in what is now known as the Glimmora Exclusion Zone. Genetic instability of the sort which culminates in Terastallization is rarely compatible with one's health, and Eevee's lifespan is a lucky accident of evolution – yet the discovery of strange cancers in elderly competitive pokemon who frequently Terastalized during their careers was for a long time a great mystery of science.
It is Glimmora research which is to thank for the study of radiation, and the alternate term 'Glimmorization' is still frequently used in Paldea, where its connection to Terastallization has become common knowledge. What was once a strange and deadly habitat is now understood as a natural nuclear reactor; Glimmora now supply power to most of their home region, along with the controversial shards which, if nothing else, make the Paldean League a truly unpredictable experience.