# Ceremonial Knife

- By: Colima (Colima, Mexico)
- Date: c. 200 CE
- Medium: Obsidian
- Classification: Sculpture
- Dimensions: 52.4 × 8.9 × 2.5 cm (20 5/8 × 3 1/2 × 1 in.)
- Culture: Colima
- Credit line: Through prior acquisitions of Mr. and Mrs. Dave Chapman, Mr. and Mrs. Richard Reed Armstrong, and the Robert A. Waller Fund
- Museum: [Art Institute of Chicago](https://www.artic.edu/artworks/146942)
- Rights: [Public domain (CC0)](https://creativecommons.org/publicdomain/zero/1.0/)
- Picture: https://www.artic.edu/iiif/2/d6204967-2757-dd50-c2ff-43fed4dad893/full/843,/0/default.jpg
- Who can see it: Teens profiles and older (museums give no ratings; placed by Invisible Network from the museum's own words)