As to the symbol you have shown, I don't know other than it looks like an occult symbol and there is an occult connection in the higher "degrees" of Freemasonary.
The following website gives a good general overview of the origins, structure, practices, beliefs and symbols of the Freemassons:
In it there is a paragraph on symbols and on God, both of which indirectly connect
Forum:
"Cults," Sects, and "New Religious Movements"