“Jewelry for the table.” That's how the designers at Stockholm-based studio Claesson Koivisto Rune describe the brass Ballerina bowls they created in 2012 for Swedish metalsmith Skultuna. At a glance, the polished concave interior distorts the reflection, so that the form appears flat. In reality, the convex bottom allows the bowl to rock, shiver, and dance when touched, and in motion, they project glimmering reflections. This playful, dazzling quality can be enhanced by stacking multiple bowls, but a single one is enough to make an elegant impact.