Gromoviti znaci / Perun thunder symbol amulet

amulet depicting perun thunder symbol commonly known as gromoviti znaci.

this is a link to the original onshape model, so you can edit it to your liking:
https://cad.onshape.com/documents/9e6150db3cf7f574df1a72a3/w/f6246a2fad04410acf4ad072/e/8e019b08a996ecc5c2c01242?renderMode=0&uiState=684b4762ddadd90e6853d0f8