Italian Cocoon Pendant by Achille & Pier Castiglioni for Flos, 1960s

An Italian Cocoon pendant designed by Achille and Pier Giacomo Castiglioni for Flos in the 1960s, defined by an expansive, sculptural silhouette that transforms an industrial material into something remarkably soft and organic.

The pendant takes the form of a broad, flattened disc, its upper and lower surfaces curving inward toward narrow circular openings, with a pronounced horizontal edge that creates a clean division between the two halves. Despite its generous width, the pendant feels exceptionally light, appearing to float beneath a slender black suspension cord.

The shade is formed from sprayed resin applied over an internal framework, a technique that produces the distinctive cocoon-like surface. Developed to mimic the translucent quality of goatskin parchment, the material has a delicate, fibrous appearance, with fine overlapping strands and subtle variations in density. Its warm ivory-gray color shifts across the surface, creating an irregular, almost clouded texture.

At the upper opening, the underlying structure becomes more apparent. A series of evenly spaced radial divisions creates a gently scalloped edge, revealing how the shade is shaped around its internal framework. A small brass-toned fitting secures the black suspension cord, introducing a metallic detail against the softly textured surface. The same scalloped treatment appears at the lower opening, where the construction is visible from beneath.

The Cocoon technique represents an important moment in Italian lighting design, when designers began experimenting with industrial materials in ways that challenged traditional ideas of craftsmanship. Rather than relying on glass, metal, or conventional fabric shades, the Castiglioni brothers embraced a sprayed synthetic material capable of producing complex, lightweight forms. The resulting surface has the visual delicacy of parchment but belongs to a distinctly modern approach to production.

When illuminated, the pendant undergoes a remarkable transformation. Light passes through the translucent resin, revealing the fine web of fibers and the radial structure beneath. The surface shifts from a muted, almost stone-like gray to a warm amber glow, while the internal framework becomes a subtle graphic pattern. The light is softened across the broad shade, creating an atmospheric presence rather than the sharp brightness of an exposed bulb.