The Skelzir Globe was prominently featured in "The Crystal Demon".
Briefly, the globes are alive, powerful psychics and inimical to other life forms. They are extremely dangerous, as Blashvor said, and as will be demonstrated later in the story.
For a better understanding of the globes, read The Crystal Demon. It's a fairly long story, and in it Alan Westover meets his female psychic partner, Lyn Parnell and you learn how the first one was destroyed.
