Ultra-Macro Glass Onion Slice on Walnut

Generate a photorealistic, ultra-detailed 8K macro video of a pink glass onion being sliced on a premium walnut wood cutting board. The onion has vibrant pink translucent layers, glossy curved surfaces, and realistic concentric rings like a natural red onion, but made of delicate colored glass. A polished steel knife moves in slow motion and slices cleanly through the onion, creating soft lighting refractions and a crisp glass clink sound. The camera tracks in cinematic motion with a shallow depth of field, capturing high frame rate details of glass cracking, shimmering highlights, and tiny shards falling gently. Background is softly blurred with subtle warm ambient light. Include realistic sound design: knife movement, impact clink, and tiny glass shard tinkles. No humans, just ultra-macro cinematic food art.