Minimalist White Keychain Mockup

Generate a hyper-realistic image of a round white keychain with a silver ring and chain, suspended in mid-air against a gradient gray background that transitions from light to dark. The keychain should be centered, with the silver ring at the top and the white pendant hanging below, attached by a short chain. The white pendant should have a subtle shadow around its edges, and the silver components should reflect a slight sheen. The background should be a smooth gradient, lighter at the top left and gradually darkening towards the bottom right. The overall composition should be minimalist, with the keychain being the sole focus. The lighting should be soft and even, with no harsh shadows or bright highlights. The image should be highly detailed, with clear textures on the metal and the white material of the pendant. The style should be reminiscent of a high-end product photography, with a focus on showcasing the keychain's design and materials. The image should be free of any watermarks, logos, or other distractions. The color palette should be predominantly neutral, with the white and silver of the keychain standing out against the gray background. The overall mood should be one of simplicity and elegance, highlighting the understated design of the keychain.