Glossary · Disclosure
Patina
A surface film or colour acquired with age and exposure — the iron-stained skin of a desert-weathered bone, the tarnish on native copper, the polish of handling.
A surface film or colour acquired with age and exposure — the iron-stained skin of a desert-weathered bone, the tarnish on native copper, the polish of handling. Original patina is evidence of history; a faked patina is a treatment.
Sources
Cite this article
Stratum Study. "Patina" (Glossary). Stratum Study pack 2026.09, as of 2026-09-16. https://stratum.black/study/glossary/patina. Accessed 2026-09-20.
@misc{stratum-patina,
title = {Patina},
author = {{Stratum Study}},
howpublished = {\url{https://stratum.black/study/glossary/patina}},
year = {2026},
note = {Glossary article, Stratum Study pack 2026.09, as of 2026-09-16; sources: stratum. Accessed 2026-09-20.}
} Citations carry the pack version and the article's as-of date so they resolve to the same text later. The facts themselves belong to the sources listed below; cite those for the science.