3d pbr character reference sheet, headdress standard portrait, mongolian volcanic girl from ulanqab lava platform, bust shot, focus on obsidian crown, crown made of rough polished obsidian shards, center inlaid a large hexagonal gray-purple volcanic crystal, crystal has subtle internal fracture texture, two loose braids tied with seabuckthorn leather cord, braids interspersed with small pumice beads and obsidian flakes, simple leather forehead ornament under the crown, dry coarse black wind-blown hair, same facial features as reference 01, gray wheat skin, faint tear mole under eye, soft side cool light, dark basalt background, clear structure of crown, no occlusion, ultra-detailed texture of stone and leather, photorealistic, modeling reference