African slaves washing for diamonds guarded by overseers with guns in Brazil. Handcoloured copperplate engraving from Gottlieb Tobias Wilhelm's Unterhaltungen aus der Naturgeschichte: Des Mineralreichs, Augsburg, 1828.

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Size: 7639px × 4416px
Photo credit: © Florilegius / Alamy / Afripics
License: Licensed
Model Released: No

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