This pendant is defined by a minimal surface bridging a circle and an internal trefoil knot. The surface itself is inspired by the amazing wood-art of Michael Foster. Have a look at the rotating view, you'll notice that the surface shows a smiling face in the front view and a frowning face, full of anger, in a quarter view.
The surface has been created using the wonderful Surface Evolver optimizer, and then transformed into a round border pendant using blender.
Assorted earrings can be found in the i-Lens series or as traditional earrings.