Sunken Crystal City of Lumina

An sprawling underwater fantasy metropolis built entirely from colossal raw quartz and amethyst crystals, glowing softly from within in shades of cyan, magenta, and deep violet. Ancient Atlantean-inspired aqueducts and towering slender spires weave between massive coral gardens and vibrant sea anemones under the dark blue ocean depths. Schools of glowing bioluminescent jellyfish and majestic manta rays float gracefully through the clear water column, casting intricate wavering light caustics across translucent crystal bridges and carved obsidian plazas. A solitary deep-sea diver in an ornate steampunk brass diving suit stands on a high crystal balcony in the foreground, holding a copper lantern and gazing down at the sprawling luminous cityscape below. The lighting is dominated by internal crystalline radiance and dappled teal sunlight filtering down from the far ocean surface above. Captured in an ultra-wide atmospheric establishing shot with a 24mm anamorphic lens, deep focus, soft particle haze, subtle volumetric light rays, fine water refraction details, hyper-detailed environment design, concept art by John Howe and Dylan Cole, ethereal high fantasy tone.