The other day, I posted a tutorial about how to make these earrings.

Here is a variation on the same theme:

Circle Pendant Necklace with Lemon Quartz

In this example, I used a round mandrel and twisted 22g wire at the "4" mark.  I then completed all the steps in the tutorial with one exception:  instead of lying the jump ring flat against the circle, I soldered it side ways so that the pendant would hang from a chain properly.  This is a bit trickier than doing it flat, but I used two third hands to make it less awkward.  As a finishing touch, I hammered each side of the wire before polishing the pendant.  I think it would also be cool to just hammer one side, sort of like a half moon type look.