Knoll Diamond chair

Knoll

Bertoia Diamond Chair - Vintage Collection

Designed by Harry Bertoia in 1952, this lounge chair transforms industrial steel wire into a lightweight, geometric frame. The open lattice structure provides strong ergonomic support while keeping the visual footprint clear and open. Paired with a plush seat cushion, it delivers relaxed seating with a distinct architectural presence for residential and contract spaces.

Our Vintage Collection brings together carefully curated pieces from past collections, selected for their enduring design and timeless appeal. Outside the traditional retail cycle, these pieces offer a rare opportunity to discover distinctive designs, available directly from stock.

Details

Designer: Harry Bertoia

  • Width 85.1 cm
  • Depth 71.1 cm
  • Height 76.2 cm

  • Structure: Welded steel rods and a tubular steel base.
  • Cushion: High-density foam core upholstered in premium green velvet, fitted with integrated snap fasteners to attach securely to the frame.


Materials & Care

Frame

  • Black

Seat Upholstery

  • Green Velvet

Care

  • Frame: Dust regularly with a dry microfiber cloth, and wipe away smudges using a soft cloth slightly dampened with warm water and mild soap before drying immediately. Avoid steel wool, abrasive pads, or harsh chemical cleaners, as these can scratch or dull the metal's protective finish.
  • Upholstery: Vacuum gently on low power using a soft brush attachment, brushing in the natural direction of the pile to maintain its plush texture. Blot liquid spills immediately with a dry, white cloth without rubbing to avoid crushing the delicate fibers, and keep out of direct sunlight to preserve the rich green color.

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