The Legendary Emerald Tablet

The origins of Western alchemy can be traced back to Hellenistic Egypt, in particular to the city of Alexandria. One of the most important characters in the mythology of alchemy is Hermes Trismegistus (Hermes the Thrice-Great).

​The name of this figure is derived from the Egyptian god of wisdom, Thoth and his Greek counterpart, Hermes. The Hermetica, which is said to be written by Hermes Trismegistus, is generally regarded as the basis of Western alchemical philosophy and practice. In addition, Hermes Trismegistus is also believed to be the author of the Emerald Tablet.

Source: http://ufothetruthisoutthere.blogspot.pt/2014/10/the-legendary-emerald-tablet.html​