12x16mm oval cabochons, made of natural green aventurine.
Natural color, not enhanced in any way
Aventurine is a type of non-translucent quartz. It can be green or brown and shimmers softly due to the small, natural mica particles within the stone.
Note: the image gives you a good general idea of what the cabochon looks like, but colors and patterns of natural stones may vary from lot to lot.