Fonds Maçonnique document FM4 (85) contains a degree called: “Le Chevalier du Phenix” (‘the Knight of the Phoenix’) which has an interesting symbol in the middle. It is described in the text (translated of course) like this:
The square that you see under this plate is an allegorical sign of the four elements that were necessary for the creation of the world.
The circle which is enclosed in this quarry is the union of these four elements to help in this creation.
The triangle which this circle contains is the first mover of all things, it is the great Tetragrammaton, it is the alpha and omega, [test in a word the whole] of the whole.
This burnt stone which is found in the triangle is a part of this great whole, which part can communicate its divine virtue to a thousand other parts, in short, it is this Gordian knot that the wise and true lover of the good can destroy.
Fonds Maçonnique FM4 (85)