Here's one more in my sculptural series using the tetrahedron series I've been playing with. I wanted a bigger piece. This one is about 9" across and 2.5" high. I made the zigzagging tubes on what is usually the outside quite short. This creates a negative curve and so the zigzag edge is the inside instead of the outside. I have to confess I did this so as not to use so much gold, as I buy it in much smaller quantities. On most jewelry, bracelets for instance, it's the outside where you want to put the emphasis, but with a bowl form, it's the inside.