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Tucked inside Harvard is a library unlike any other, one that protects some of the world’s rarest colors. We’re talking pigments made from extinct insects, crushed gemstones, rare metals, and even ancient Egyptian mummies. It’s called the Forbes Pigment Collection, and it holds over 2,500 samples that capture the history of color like a secret rainbow museum.These aren’t just pretty powders, they’re stories in a jar. Each pigment tells a tale of science, culture, and even controversy. Some are so rare or toxic they can never be recreated. From the vibrant blues of lapis lazuli to the eerie red of mummy brown, this hidden archive preserves the shades that once painted the world… and may never exist again.