Crystal Cave Koala - Concept Art in Luminescent Quartz

Ultra-detailed fantasy concept art of a calm koala perched inside a vast crystal cavern. The koala sits on a jagged crystal ledge, one paw resting on a shimmering stalagmite, surrounded by towering stalactites and geodes that refract light. Bioluminescent minerals glow in aquamarine, amethyst, and soft pink, casting prism-like reflections on damp cave walls. Mist drifts through the air, with volumetric light rays piercing the space. The fur of the koala is fluffy and textured, catching the glow with subtle rim lighting. The composition is a three-quarter view of the koala, looking toward the viewer with a gentle, curious expression. The color palette is cool blues and purples with warm amber highlights, creating a serene, wondrous mood. The artwork is digital painting concept art suitable for a fantasy game, with meticulous detail, crisp edges on crystals, and dramatic cinematic lighting.