Use case: photorealistic-natural. Create ONE finished photographic website background for a coherent collection named Prism studies. Premium material still-life photography of real thick optical glass and physically believable refracted sunlight, captured on a medium-format camera. Architectural restraint and tactile detail: small irregular air bubbles within cast glass, fine moulded ribs where specified, plausible beveled edges, dense colored edges, subtle surface imperfections, contact shadows, realistic internal reflections and luminous but controlled caustics. The glass must look photographed, never glossy CGI, a plastic render, a generic abstract blob, a torus or a floating chrome object. Color comes from the glass and light, never an added digital gradient or haze. Deliberate asymmetric composition, no unnecessary props, no vase, no flowers, no sphere, no letters, typography, logos, watermark, browser, UI, border, collage, contact sheet or people. Output ONE standalone edge-to-edge image in the stated aspect ratio, using the highest native detail available. Preserve the requested calm copy space; keep sharp visual detail and bright caustics out of it. Scene and framing: A horizontal 16:9 sunlit photograph. A low thick cobalt-blue optical-glass wedge enters from the LEFT edge and occupies only left 30 percent, slightly elevated camera angle showing its beveled thickness and physical contact with an icy-white matte plaster tabletop. Direct side sunlight refracts several precise overlapping blue quadrilaterals near bottom-left. The whole right 58 percent is uninterrupted pale chalk-white, low contrast and suitable for a right-aligned headline. No horizon line, no text, no extra glass objects.