Gemini crossed arms imagery

[VViews]

JKP,


Yup, that's because the main secret is knowing what actual ingredients to use. This is never referred to explicitly.
The rest is pretty much open, and of course consistent: its chemistry after all, just not yet packaged as such.

I think I've found an earlier version of the male/female with crossed arms pair.

F 16v, British Library MS Harley 2407, England, 2nd half of the 15thC (cropped by me):


Granted this image has superficial differences: nudity, standing in liquid, no crowns or obvious suns and moons, but it's the exact same idea.
It is the first instance that I could find (so far) of the crossed arms twins image in alchemy.
MS Harley 2407 (a collection of alchemical treatises) was subsequently owned by John Dee and Elias Ashmole.

The entire emblem is repeated almost exactly, in 1652 in an alchemical emblem in Ashmole's Theatrum Chemicum Britannicum.