Jeffrey Appling GJG (GIA) Ashlar = Stone Ashlar is a term used in masonry which basically means a rough stone for building. Ashlar Rough, Ashlar Clean, and Ashlar Perfect. What is behind the meaning of Freemasonry symbolism? I don’t know. I do know some common sense. (Below left) Masonic drawing of a rough preformed rock … More Treasure Map to the Temple. Ashlar Perfect.