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 square 1:1 close photographic study, high oblique camera view. One thick honey-amber glass rectangular block lies flat at lower right on matte pale cream mineral board. Its edges slightly uneven from casting, tiny suspended air bubbles. Sunlight creates a short crisp angular honey-colored caustic shadow below and to the right. Object and shadow stay within lower 42 percent, top 53 percent clean unmarked cream with very quiet natural material texture, suitable for a small editorial headline. No surrounding props, no reflective gloss on the board.