Layered dahlia bloom with gradient coloring against dark background

Rendered dahlia structure comprises concentric petal layers arranged in spiral geometry. Color spectrum transitions from deep crimson center through coral and salmon mid-tones to cream and pale yellow outer petals. Background employs dark teal gradient. Lighting creates volumetric shadows emphasizing three-dimensional petal form through directional illumination on anterior surfaces, dark recession on posterior areas. Digital rendering methodology produces smooth surface gradations and calculated shadow placement.