Henry Wadsworth Longfellow — Photo by Julia Margaret Cameron, 1868
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=836438

Gold —
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Silver —
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Qin Shi Huangdi, first emperor of China — Portrait painting from an 18th-century album of Chinese emperors' portraits
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=51527505

Mercury (Hg) in liquid form —
Photo Credit: By Bionerd - Own work, CC BY 3.0, https://commons.wikimedia.org/w/index.php?curid=4972709

Symbol for Mercury — The symbol for the planet Mercury (☿) has been used since ancient times to represent the element
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=688876

Mercury —
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bust of Constantius II —
Photo Credit: By Jebulon - Own work, CC0, https://commons.wikimedia.org/w/index.php?curid=29740542

Macarius of Jerusalem — cropped from Helena of Constantinople and the finding of the True Cross with Macarius of Jerusalem by Giandomenico Tiepolo. Oil on canvas (1745 -1749)
Photo Credit: By Didier Descouens - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=53012225

Helena of Constantinople and the finding of the True Cross with Macarius of Jerusalem — San Polo (church) - Oratory of the Crucifix, by Giandomenico Tiepolo. Oil on canvas (1745 -1749).
Photo Credit: By Didier Descouens - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=53012225

Saint Cyril of Jerusalem — fresco at a Greek orthodox church
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=9710676