Two Circle Stone Earstuds

The combination of two circles, one with a stone and a slightly bigger one in brass / silver,  defines this simple earstud.

Material: 
shiny polished brass / matte polished sterling silver, stones: coral, aquamarine, black onyx
Measurements:
H 12 mm, W 5 mm, Ø stone 4 mm, Ø lower circle 7 mm