These silky organic forms from Dale Chihuly’s Macchia (Italian for ‘marked’ or ‘spotted’) series derive from the artist’s Seaforms series, begun in the 1980s, which explores the abstract, diaphanous qualities of glass and the nesting, rippling quality of shells. Chihuly is feted in the contemporary glass world for his bravura and technical ambition. In his workshop in Seattle he engages teams of skilled glassblowers and assistants to meet the prolific demand for his work, including spectacular, site-specific installations.