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Diamond Chair
Iconic Designs

Diamond Chair

About the Design

To fully understand the design of Harry Bertoia’s (1915–78) 1952 Diamond chair — an austere and photogenic work of woven steel wire, the intricately sculptural wings of which create the illusion of sitting on air — it helps to go back to his college days: In 1937, the Italian-born artist and designer, who emigrated to Detroit at age 15, earned a scholarship to Cranbrook Academy of Art, the illustrious Michigan design school that attracted such luminaries as Florence Knoll, Eero Saarinen and Charles and Ray Eames. Bertoia was deeply influenced by the Eameses, especially by the sculptural quality that was so prominent in the furniture they made. In the 1940s, he left Cranbrook to work for the couple, developing the molded plywood furniture that would become a trademark of their designs.

Bertoia learned to weld while employed by the Eameses, but left their workshop in anger over the lack of credit he received for the important contributions he made there — a dispute that would come to play an important role in the Diamond chair’s development. He eventually took a job at an electronics lab, where he analyzed human mobility for the purpose of designing electronics with easy-to-reach knobs and consoles. 

When his former Cranbrook classmate Florence Knoll tapped Bertoia to make furniture for the Pennsylvania company she had recently founded with her husband, Hans, the designer was swayed with the promise of full credit for designs he produced. Armed with a newly minted background in ergonomics as well as the knowledge he gathered from experimentation with the Eameses, Bertoia capably applied what he’d learned over the years at Knoll, where he utilized thin wires of welded metal to produce pieces that appeared to be floating in the wind — yet remained surprisingly comfortable and supportive. The Diamond chair, a widely revered component of the innovative metal furniture line that Bertoia designed at the company, has been in continuous production at Knoll since 1952 and is available in four finishes today.

Diamond Chair

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Mid-Century Modern Red Wire Diamond Lounge Patio Chair by Harry Bertoia Knoll
By Knoll, Harry Bertoia
Located in Philadelphia, PA
A classic diamond chair designed by Harry Bertoia and produced by Knoll. This chair features a red factory powder coat. Always used indoors but could be used as a patio chair.
Category

Early 2000s American Mid-Century Modern Lounge Chairs

Materials

Wire

Pair of Four White Harry Bertoia "Diamond Chairs" Produced by Knoll, 1950s
By Harry Bertoia
Located in Almelo, NL
A set of four of 1960s "421" Diamond chairs by Harry Bertoia for Knoll, in white with contrasting black legs. More information about the designer: Harry Bertoia's finest achieve...
Category

Vintage 1950s American Mid-Century Modern Armchairs

Materials

Metal

Harry Bertoia Knoll Pair of White Welded Metal Wire Diamond Armchairs 1952
By Harry Bertoia, Knoll
Located in Catania, IT
Pair of armchairs model "Diamond" designed by Harry Bertoia for Knoll in Italy, 1952. Beautiful welded wire chairs in white powder coated finishes that are suitable for outdoor use....
Category

Vintage 1950s Italian Mid-Century Modern Chairs

Materials

Metal

Pair of Early Bertoia Wide Diamond Chairs
By Harry Bertoia, Knoll
Located in East Hampton, NY
The wide diamond is the largest of the Bertoia seating group and like the bird chair, has shock mounts between the seat and the base which offers an additional measure of comfort. Th...
Category

Vintage 1960s American Mid-Century Modern Chairs

Materials

Stainless Steel, Chrome

Diamond Chair by Harry Bertoia for Knoll, Full Cover Plum Knoll Tweed
By Knoll, Harry Bertoia
Located in Chattanooga, TN
Fully restored vintage Bertoia diamond chair by Knoll. (2) Available, sold separately. Our team used the original pattern to recreate a new cover in beautiful plum colored Knoll twee...
Category

Mid-20th Century American Mid-Century Modern Lounge Chairs

Materials

Stainless Steel

Pair of Bertoia Diamond Chairs
By Harry Bertoia
Located in Brooklyn, NY
Pair of Mid-Century Modern wire 'Diamond' chairs designed by Harry Bertoia manufactured by Knoll. Please confirm item location (NY or NJ).
Category

Vintage 1960s Mid-Century Modern Chairs

Harry Bertoia Diamond Chair for Knoll
By Harry Bertoia
Located in Solihull, GB
Originally designed in 1952 by Harry Bertoia the Diamond chair is unquestionably one of the most iconic chairs from the mid 20th century. The chair has a hand welded, polished chr...
Category

Mid-20th Century American Chairs

Materials

Chrome

Early and Rare 'Pre-Production' Harry Bertoia Small Diamond Chair for Knoll
By Harry Bertoia
Located in Cincinnati, OH
Early production small diamond chair with a very usual double wire seat configuration, the typical wire structure is in place but an additional larger spaced wire seat frame is attac...
Category

Mid-20th Century American Mid-Century Modern Lounge Chairs

Materials

Wire

Custom Powder Coated Green Harry Bertoia Diamond Chairs for Knoll
By Harry Bertoia
Located in Ferndale, MI
Pair of Harry Bertioa for Knoll diamond chairs recently restored and powder coated in a lively apple g green .
Category

Vintage 1960s American Mid-Century Modern Chairs

Materials

Steel

Harry Bertoia for Knoll Small Diamond Chairs/ Pair
By Harry Bertoia, Knoll
Located in Philadelphia, PA
Harry Bertoia pair of small diamond chairs. Black Frames with newly upholstered seat pads. One chair has new plastic glides and one has older glides. Black Frames are in very nice sh...
Category

Vintage 1970s American Mid-Century Modern Lounge Chairs

Materials

Metal

Set of Two "Diamond" Chairs by Harry Bertoia for Knoll
By Harry Bertoia
Located in lyon, FR
Set of two "diamond" chairs by Harry Bertoia for Knoll. The chairs are in chromed steel. 1970s. Perfect condition. They are signed on the back (see picture). Dimensions: H75 cm x...
Category

Vintage 1970s American Mid-Century Modern Armchairs

Materials

Steel

Diamond Chair by Harry Bertoia for Knoll
By Harry Bertoia
Located in lyon, FR
Diamond chair by Harry Bertoia for Knoll. The chair is in chromed steel. 1970s. Perfect condition. The chair is signed on the back (see photo) Dimensions: H 75 cm x W 85 cm x D 7...
Category

Vintage 1970s American Mid-Century Modern Armchairs

Materials

Steel

Original 1953 Harry Bertoia Diamond Chair for H. G. Knoll Products
By Harry Bertoia
Located in Las Vegas, NV
Rare early production of the diamond chair by Harry Bertoia. Completely original upholstery and black finish. Tagged "H.G. Knoll Products" A museum piece for the midcentury collec...
Category

Mid-20th Century Mid-Century Modern Lounge Chairs

Materials

Metal

Diamond Chair Full Cover, Harry Bertoia for Knoll
By Harry Bertoia
Located in Las Vegas, NV
Diamond chair with full cover in lovely purple-grey upholstery. Labeled Knoll
Category

Mid-20th Century American Mid-Century Modern Chairs

Materials

Metal

Diamond Chair by Harry Bertoia, Knoll International
By Harry Bertoia
Located in Berlin, Berlin
Original diamond chair, designed by Harry Bertoia. U.S.A., Knoll International, 1970s Late production Diamond chair in chrome-plated metal with black leather pad. WIth KNOLL marki...
Category

Vintage 1950s American Mid-Century Modern Armchairs

Materials

Metallic Thread

Diamond Chairs by Harry Bertoia for Knoll International
By Knoll, Harry Bertoia
Located in Brussels, BE
Diamond chairs by Harry Bertoia for Knoll International, 6 available Sold par piece 1200€.  
Category

Vintage 1970s European Armchairs

Materials

Chrome

Vintage Mid-Century Modern Large Diamond Chair by Harry Bertoia for Knoll
By Harry Bertoia
Located in San Marcos, CA
Here is a beautiful vintage large "Diamond" chairs by famed designer Harry Bertoia manufactured in the USA by Knoll. This sculptural chair has been fully restored: The metal frame ha...
Category

Vintage 1960s American Mid-Century Modern Lounge Chairs

Materials

Metal

Pair of White Harry Bertoia "Diamond Chairs" Produced by Knoll, 1950s
By Harry Bertoia
Located in Stockholm, SE
Rare set of two "Diamond Chairs" designed by Harry Bertoia and produced by Knoll in the late 1950s. In good vintage and original condition with signs from age and use. Both chairs ar...
Category

Vintage 1950s Italian Mid-Century Modern Armchairs

Materials

Metal

1 Knoll Bertoia Early Version Diamond Lounge Chair
By Harry Bertoia
Located in Pasadena, TX
Harry Bertoia Italian artist and furniture designer, Harry Bertoia`s career began in the 1930s as a student at the Cranbrook Academy of Art where he re-established the metal-worki...
Category

Mid-20th Century North American Mid-Century Modern Lounge Chairs

Materials

Steel

Vintage Diamond Chair by Harry Bertoia for Knoll, Set of 2
By Harry Bertoia
Located in Cape Town, WC
Using industrial material while elevating the chair to the status of an art-work, Bertoia cemented the conversation around utility and aesthetics within the context of furniture desi...
Category

Vintage 1950s American Mid-Century Modern Lounge Chairs

Materials

Steel

Diamond Chairs by Harry Bertoia for Knoll International
By Knoll, Harry Bertoia
Located in Brussels, BE
Diamond chairs by Harry Bertoia for Knoll International, 6 available Sold par piece 1200€.  
Category

Vintage 1970s European Armchairs

Materials

Chrome

1960s "421" Diamond Chair by Harry Bertoia for Knoll International
By Knoll, Harry Bertoia
Located in Shepperton, Surrey
An early 1960s "421" Diamond chair by Harry Bertoia for Knoll International. Two are available. Harry Bertoia's striking 421 chair is welded from steel rods and coated in Rilsan p...
Category

Mid-20th Century American Mid-Century Modern Side Chairs

Materials

Steel

Pair of Large Diamond Chairs by Harry Bertoia for Knoll
By Knoll, Harry Bertoia
Located in Dallas, TX
Fabulous, iconic pair of large "Diamond Chairs" by Harry Bertoia for Knoll. Black metal frames and yellow upholstery.
Category

Vintage 1960s Mid-Century Modern Chairs

Materials

Steel

Harry Bertoia Diamond Chair and Ottoman for Knoll, circa 1950's
By Knoll, Harry Bertoia
Located in Haddonfield, NJ
Large diamond chrome chair designed by Harry Bertoia for Knoll in 1952. The chair and ottoman have the original red fabric cover. Harry Bertoia’s wire chairs are among the most rec...
Category

Mid-20th Century American Mid-Century Modern Lounge Chairs

Materials

Chrome

Set of Two Diamond Lounge Chairs by Harry Bertoia for Knoll with Kvadrat Fabric
By Knoll, Harry Bertoia
Located in Hellouw, NL
Set of two diamond lounge chairs by Harry Bertoia for Knoll with Kvadrat Fabric. These chairs have a black frame with a fully covered seating area with a blue mixed fabric. The chair...
Category

Late 20th Century American Mid-Century Modern Lounge Chairs

Materials

Steel

USA Mid-Century Red Cushion and Steel Diamond Armchair by Bertoia for Knoll,1970
By Knoll, Harry Bertoia
Located in MIlano, IT
USA mid-century Red cushion and steel Diamond armchair by Bertoia for Knoll, 1970s. Diamond armchair with structure in welded steel rods with polished chrome plating. The red cushio...
Category

Vintage 1970s American Mid-Century Modern Chairs

Materials

Steel

1952, Harrie Bertoia, Diamond Chair 421, Black & White with Black Vinyl Cushion
By Knoll, Harry Bertoia
Located in IJMuiden, NL
Please ask Casey Godrie Ibiza/Amsterdam for our competitive shipping quotes. Early Harry Bertoia two-tone diamond chair. Black and white lacquered frame with original black seating....
Category

Vintage 1950s American Mid-Century Modern Armchairs

Materials

Metal

Vintage Mid-Century Modern Large Diamond Chair by Harry Bertoia for Knoll
By Harry Bertoia
Located in San Marcos, CA
Here is a beautiful vintage large "Diamond" chairs by famed designer Harry Bertoia manufactured in the USA by Knoll in the 1970s. This sculptural chair has been fully restored: The m...
Category

Vintage 1960s American Mid-Century Modern Lounge Chairs

Materials

Metal

Harry Bertoia for Knoll Wide White Diamond Chair & Ottoman with Pink Upholstery
By Harry Bertoia, Knoll
Located in St. Louis, MO
Mid-Century Modern Harry Bertoia for Knoll wide version diamond chair with ottoman, frames are original white paint an original but faded pink Knoll textile covers. Minor scuffs to f...
Category

Vintage 1960s American Mid-Century Modern Lounge Chairs

Materials

Steel

1955, Harry Bertoia for Knoll International, Wide, Large, Chrome, Diamond Chair
By Knoll, Harry Bertoia
Located in IJMuiden, NL
Please ask Casey Godrie Ibiza/Amsterdam for competitive shipping quote. This big chrome diamond chair is a true icon with its beautiful design. The chair has some traces of wear lik...
Category

Vintage 1950s American Mid-Century Modern Lounge Chairs

Materials

Metal, Chrome

Harry Bertoia Diamond Easy Chairs Produced by Knoll in America
By Harry Bertoia
Located in Malmo, SE
Pair of diamond easy chairs designed by Harry Bertoia. Produced by Knoll in America.
Category

Vintage 1960s American Mid-Century Modern Lounge Chairs

Materials

Metal

USA Mid-Century Red Cushion N Steel Diamond Armchairs by Bertoia for Knoll, 1970
By Knoll, Harry Bertoia
Located in MIlano, IT
USA mid-century Red cushion and steel Diamond armchairs by Bertoia for Knoll, 1970s. Set of four Diamond armchairs with structure in welded steel rods with polished chrome plating. ...
Category

Vintage 1970s American Mid-Century Modern Chairs

Materials

Steel

Harry Bertoia for Knoll Red Diamond Chair, 1960s
By Harry Bertoia
Located in Wallkill, NY
Large Bertoia diamond chair measuring 28.75 in H x 40. in W x 29.5 in. What a wonderful addition to your Mid-Century Modern decor.
Category

Vintage 1960s American Mid-Century Modern Chairs

Materials

Steel

Diamond Chairs by Harry Bertoia for Knoll International
By Knoll, Harry Bertoia
Located in Brussels, BE
Diamond chairs by Harry Bertoia for Knoll International, 6 available Sold par piece 1250€.  
Category

Vintage 1970s European Armchairs

Materials

Chrome

More Harry Bertoia Designs
Bertoia Barstool - 427C
Bertoia Barstool - 427C
Average Price
$3,200
Number Available
2
Bertoia Barstool - 427C
Materials
Metal, Chrome, Fabric, Upholstery
Styles
Mid Century Modern
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Bertoia Barstool - 428C
Bertoia Barstool - 428C
Average Price
$2,163
Number Available
2
Bertoia Barstool - 428C
Materials
Chrome, Metal, Animal Skin, Fabric, Leather
Styles
Mid Century Modern
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Bertoia Bench - 400Y/410Y
Bertoia Bench - 400Y/410Y
Average Price
$3,339
Number Available
5
Bertoia Bench - 400Y/410Y
Materials
Wood, Hardwood, Metal, Ash
Styles
Mid Century Modern
Simple, straightforward and unassuming in its clever design, the Bertoia bench is a hallmark mid-century modern piece. Harry Bertoia (1915–78) was an Italian-American sculptor, jewelry designer and furniture maker who developed his famous bench for Knoll in 1952. Made of slatted wood set atop a chrome-plated welded steel frame, the bench was Bertoia’s first product for Knoll, who granted him creative freedom when he joined the company’s studio in 1950. While the piece does not represent Berto...
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