ANOTHER KEYSTONE IDEA:
From Masonic Dictionary
The stone placed in the center of an arch which preserves the others in their places, and secures firmness and stability to the arch…….
THINK ABOUT THIS^^^^
COULD KEYSTONE = GOLD
ITS OVER THERE, BEHIND YOU
THE REPUBLIC OF THE UNITED STATES OF AMERICA BEING RETURNED TO THE PEOPLE. WE CAN'T SEE THE GOLD PERSE` BUT THE "EFFECTS" ON OUR LIVES WITH A RETURN TO GOLD STANDARD
http://www.masonicdictionary.com/ketstone.html