Pearl
Figure 1 - Full-focus-Composite: While pearls appear smooth to the naked eye, it is clear that under high magnification the surface has a ridge texture. (Scroll for additional images of this sample.)
Figure 2 - Depth Colored: Depth information has been added to the image above through color with red corresponding to the higher points and blue the lower. The uniformity of color shows that each layer is relatively flat but distinct in height. (Scroll for additional images of this sample.)