Create a clean 2x2 widescreen presentation of four original app-style emblems made from handmade mosaic stained glass. Each circular medallion should use translucent colored glass pieces, dark lead outlines, subtle bevels, soft natural reflections, and a pale studio background. Design the icons as fictional brand-neutral symbols: abstract sound waves, a diagonal motion slash, a friendly abstract ghost-like silhouette, and a simple bird-inspired shape, but make every silhouette original. Use rich green, red, yellow, and cyan palettes without copying any real brand color layout. Avoid real company names, existing app logos, trademarked icon shapes, copied social-media symbols, official brand colors arranged like known marks, readable text, creator handles, and religious or governmental insignia. Output a 16:9 high-quality image with crisp panel dividers and polished product-photo lighting.