I'm bringing back a favorite bead of mine. It is a black bone doughnut. Here are the many styles that I have used it in. (I apologize in advance for the lack of creativity in naming my jewelry. Not one of my strongest qualities. :-))
This is called, "Circles on a Chain"
I call this necklace, "Bursts of Color".
This is called "Black Circles and Chain Earrings"