take this semi final render and enhance realism without altering any of the current image s geometry features or objects as well as image orientation no cropping zooming etc and make it 4k do not add any new objects apply a champagne metal finish and stone texture to the existing pendants use the current 3d geometry as a strict template do not change the shapes only enhance the material definition and contrast to make the textures visible through the light bloom keep the original product silhouette exactly as it is