Grazhir
Grazhir is the now-destroyed fourth moon of Elanthia, formerly alongside Yavash, Xibar, and Katamba.
The fact that Grazhir seems to exist in the game world of Gemstone IV has caused players to speculate the Dragonrealms takes place in a time period that is the far future relative to Gemstone. Some locations and characteristics of both games' Elanthias parallel one another, but the world has been rearranged by several thousands of years of intervening history and at least one global near-apocalypse.
Mythology has it that Grazhir was somehow the "egg" of the World Dragon, and that its hatching caused to moon to cataclysmically explode. The World Dragon then wreaked havoc upon Elanthia, but was eventually soothed by the goddess Peri'el, who continues to sing to it somewhere deep within the bowels of the earth in order to keep it pacified. Astronomers within Gemstone IV have noted that the moon appears oddly egg-shaped, and seems to be growing ever so slowly.
Many shards of Grazhir fell to Elanthia when it exploded. Some have been recovered, although it is almost certain that many have not. Grazhir shards are prized by Moon Mages as artifacts of incredible lunar magic power.