The Forbes Pigment Collection at the Harvard Art Museums is a collection of pigments, binders, and other art materials for researchers to use as standards: so they can tell originals from restorations from forgeries. It's not open to the public, because it's a working research library -- and because some of the pigments in there are rare, historic, or really shouldn't be handled by anyone untrained.
More about the Forbes Pigment Collection: https://www.harvardartmuseums.org/article/a-short-history-of-a-pigment-collection-and-art-conservation-in-the-united-states
The Harvard Art Museums: https://www.harvardartmuseums.org/
Edited by Michelle Martin https://www.youtube.com/@OnTheCrux
Audio mix by Graham Haerther https://haerther.net/
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