The Square and Compass Signet MENS Ring JEWELRY The Masonic Symbol - The Square and Compasses is the single most identifiable symbol of Freemasonry. The Letter G - In Hebrew, the language our Bible was originally written in, it is called Gheemel (or Gimel) and has a numerical value of 3. The letter G in Freemasonry stands for both God and Geometry.This product is not Rhino Nurbs model, This is STL file and its ready for 3D printing, This ring is designed in usa size 10 and if you cast it in 14KT gold you will need approximately 22 grams of gold. Please check the pictures for more information.