Blue dahlia bloom with concentric petal arrangement against dark background

Digitally rendered flower specimen displaying layered blue petals arranged in geometric concentric pattern. Central green and gold stamen structure positioned at focal point. High-contrast lighting creates dimensional surface modeling with graduated tonal values transitioning from light cyan outer petals to deep navy inner formations. Black background isolates subject. Technical execution employs precise botanical symmetry with methodical petal placement suggesting three-dimensional volumetric form through shadow and highlight manipulation.