Openwork

Openwork or open-work is a term in art history, architecture and related fields for any technique that produces decoration by creating holes, piercings, or gaps that go right through a solid material such as metal, wood, stone, pottery, cloth, leather, or ivory. Reference: Wikipedia

Below are some examples and price guides of Art Deco openwork items including an Art Deco diamond bracelet and a painted openwork umbrella stand.