Kokoshnik
The crescent of the kokoshnik is similar to my mark.
Some kokoshnik designs are also very shell-like and laced with pearls so it is not difficult to see the connection to Aphrodite, and some even resemble the crowns she wears on statues.
Queen Genepil’s (Mongolia) crown had both an upright and upside-down crescent.
https://www.themoscowtimes.com/2021/07/12/the-ancient-russian-kokoshnik-is-having-a-moment-a74498
There is also horned-shaped kokoshnik that looks like that worn of Maleficent.