This is a modification of the akua wallpaper. I rounded off the corners to be a bit softer on the eyes, and added some point light coming from the top (to match the glare on the marble). This looks especially nice with some vertical shading to a black background.
The akua wallpapers were originally created by silcndrgn. I made only minor changes that I want to share with you. Please see silcndrgn's content for the originals.