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 wide 21:9 photograph. A single substantial rectangular amber cast-glass slab stands vertically at 79 percent across on a pale ivory matte limestone table, shallow visible horizontal seam where table meets seamless cream wall, the slab's top and right edges fully visible. Low afternoon sun from upper right creates amber-honey refraction on the table near the lower right only. Composition shot at table level with a 75mm lens. The left 58 percent and upper-left remain almost uniform warm ivory, quiet and usable for dark website type. Sophisticated sunlit mood, fine optical detail rather than syrupy melted glass.