Planet Lumicrista, observed from space, appears as a radiant sapphire orb surrounded by a thin, shimmering atmosphere of pale azure. Its most striking features are the extensive glowing crystal caverns that permeate its rocky crust. Surface explorations reveal that these caverns consist of bioluminescent crystals, primarily in hues of deep purple and electric blue. The luminosity of these formations varies rhythmically, suggestive of an underlying geophysical or possibly biogenic mechanism. Aboveground, the planet is characterized by rugged, wind-swept terrains and a perpetually dim sky, lit mainly by the soft glow emanating from numerous surface fissures leading to the crystalline subterranean network. The atmosphere, though thin, accommodates violent, electrically charged storms that interact spectacularly with the crystal formations, often illuminating them in a dazzling display of natural light shows.