The Church of the Emerald Tablet operates as a branch of the International Alchemy Guild under the auspices of Rev. Ambrose Mellifico. It was originally founded by Dennis William Hauck (founder of the IAG) in 1996 and was passed on to Rev. Mellifico in 2023. Its original mission was to act as the spiritual heart of the IAG. Dennis wished to create a body which functioned as an institution for the practice of spiritual alchemy in a religious format.

Today, we wish to keep true to this mission. Our church wishes to offer not only sacraments, but rites and prayers according to a weekly cycle that one can adopt as part of their daily practice.  This material relies on traditional teachings found in congruent western esoteric philosophies. We smoothly amalgamate under our umbrella streams of spirituality such as Hermeticism (classical, renaissance, and modern), western alchemy, and various manifestations of the Christian religion (Rosicrucianism, Roman and Orthodox Catholic, Orders of Chivalry, etc.).

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Rev. Ambrose Mellifico received his ordination through l'Eglise Templière Ancienne and holds titles in several other Masonic and initiatic institutions. He lives, prays the hours, performs duties, and holds services at the Bibliotheca Ortu Solis in Cincinnati, Ohio.