# Keith Sonnier artist context and auction value notes

Canonical page: https://appraisily.com/artist/keith-sonnier/
Profile generated: 2026-08-24T20:45:11.790Z
Quality: medium confidence, adequate sources

## Artist identity

- Birth date: 1941-07-31
- Death date: 2020-07-18
- Nationality: American
- Movements: Postminimalism, Process Art
- Common media: Light and neon sculpture, Sculpture incorporating ephemeral materials, Video art, Performance art, Drawing and printmaking

## About Keith Sonnier

Keith Sonnier (1941–2020) was an American visual artist associated with postminimalist sculpture, Process Art, and early experiments with light as a sculptural material. During the 1960s, he was among the artists incorporating neon and unconventional, sometimes ephemeral materials into sculpture. His practice also extended to performance and video, connecting his work with several strands of late-twentieth-century American art. Collectors most often encounter his name in relation to light-based sculpture and installation, where illumination and material construction are central to the work’s identity. Drawings and prints may also appear, although the collected evidence provides less detail about those categories. Stable museum and authority profiles—including Wikidata, Tate, MoMA, Getty ULAN, VIAF, the Library of Congress, and the National Gallery of Art—help distinguish Sonnier from similarly named people and connect records across collections. Detailed movement and medium descriptions remain conservative because the supplied institutional excerpts are limited.

## Common works and media

Sonnier is most closely associated in the collected sources with sculpture using neon, light, and unconventional or ephemeral materials. His broader practice included performance and video, while a French biographical source also identifies drawing and printmaking. Auction and appraisal records should distinguish light-based sculptures and installations from works on paper or other formats rather than treating every object attributed to Sonnier as directly comparable.

## Market and appraisal context

An appraisal should first establish whether an object is a neon or other light-based sculpture, another sculptural work, or a work on paper, then compare it with genuinely similar public auction records. Material configuration, documented attribution, date, and work type can affect which comparables are relevant. For an electrical or installation-based object, its particular components and intended presentation also require object-specific investigation. The collected source pack does not include auction-house lot descriptions, condition reports, edition information, or detailed realized-price results, so it does not support a price forecast. Current appraisal work should therefore combine secure identity research with photographs, measurements, documentation, physical condition, and comparable lots selected from available auction evidence.

## Appraisily data basis

Appraisily artist pages combine public artist-identity research with auction records, auction-house context, sale dates, realized prices, and comparable lots when those records are available. Source limitations are retained so identity evidence is not mistaken for a complete market appraisal.

## Sources

- Wikidata: https://www.wikidata.org/wiki/Q327520
- Tate: https://www.tate.org.uk/art/artists/keith-sonnier-11853
- The Museum of Modern Art: https://www.moma.org/artists/5526
- Getty Vocabulary Program: https://vocab.getty.edu/page/ulan/500004781
- Library of Congress: https://id.loc.gov/authorities/names/n80119906
- Wikipedia: https://en.wikipedia.org/wiki/Keith_Sonnier
- Wikipedia: https://fr.wikipedia.org/wiki/Keith_Sonnier
- Appraisily: https://appraisily.com/artist/keith-sonnier/