Present one single mobile app icon as a real App Store or Google Play listing asset. Use a rounded-square iOS squircle with smooth corners, centered on a plain very light neutral background. The icon should fill about 70 percent of the square 1:1 canvas and cast a soft, subtle shadow beneath it. Inside the icon, use the Color Palette as a solid background or restrained two-tone treatment, then build one bold, centered symbol from the Icon Concept with generous padding and an instantly readable silhouette. Apply the Style through gentle dimensional shading, soft highlights and believable material without adding detail. Keep the composition crisp, simple and original, with strong contrast and clean edges. Do not show a device, hands, mockup, multiple icons, variants, text outside the icon, extra objects, tiny details, thin lines, sparkles, glow, lens flares, photographic textures, watermarks or resemblance to existing logos. The result should clearly communicate the App Type at small sizes.
Use these details:
App Type: "Gold price tracker"
Icon Concept: "A small stack of gold bars with a rising line"
Style: "Soft 3D"
Color Palette: "Metallic gold and deep black"
Using your own logo, product or face? Attach it in the chat and say which of the details it replaces.
Your result will come out close to the example rather than identical to it. Change the details to make it yours.