File:Coat of arms of the Archdiocese of Atlanta.svg

English: The coat of arms of the Archdiocese of Atlanta. The three blue wavy bars that divide the shield into seven alternate wavy spaces of white and blue. In the center of the shield is an open gold crown and above on the upper wavy bar is a Cherokee rose.

The seven white and blue bars are the heraldic equivalent of the sea and represent Atlanta, which is the See City and indirectly named after the Atlantic Ocean. The seven bars also recall the seven sacraments administered in the archdiocese. Blue and white are the colors of the Blessed Mother. The wavy aspects of the bars also symbolize the rolling foothills of the Blue Ridge country of north Georgia. The open gold crown represents the crown of Christ the King, the title of the Cathedral Church of the diocese. It may also have a secondary representation commemorating King George II of England after whom the state of Georgia was named. The Cherokee rose is the state flower of Georgia.

Reference: https://archatl.com/about/archbishop-and-bishops/archbishop-gregory-john-hartmayer-ofm-conv/