ALCHEMY - MERCURY The purification of Mercury. Engraving of Key II to the Seven Keys of Basil Valentine, of the Benedictine Order, from the Tripus Aureus of Michael Maier, 1618.

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Photo credit: © Charles Walker Collection / Alamy / Afripics
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Keywords: -, alchemy, archival, archive, art, artistic, artwork, book, engraving, esoterica, historic, historical, history, ii, illustration, image, key, keys, mercury, mercury., mono, paranormal, purification