Verdigris

Verdigris

Verdigris is a common name for any of a variety of somewhat toxic copper salts of acetic acid, which range in colour from green to a bluish-green depending on their chemical composition. Once used as a medicine and pharmaceutical preparation, verdigris occurs naturally, creating a patina on copper, bronze, and brass, and is the main component of a historic green pigment used for artistic purposes from antiquity until the late 20th century, including in easel painting, polychromatic sculptures, and illumination of maps. However, due to its instability, its popularity declined as other green pigments became readily available. The instability of its appearance stems from its hydration level and basicity, which change as the pigment interacts with other materials over time.

Verdigris (film)

Verdigris is a 2023 Irish drama film, directed, written, and edited by Patricia Kelly, who also acted in the film. The film also stars Geraldine McAlinden, Maya O'Shea, Andrew Kingston, Michael James Ford, and Sally Elsbury. It premiered at the Galway Film Fleadh in 2023, before being released country-wide in Ireland in 2025.

verdigris

Noun

1. A blue-green patina or rust that forms on copper-containing metals.
2. Copper acetate.

Verb

1. To cover or coat with verdigris.