15mm x 10mm Plume Agate cabochon set in fine silver bezel wire.  I scallop the edges to add a little interest.  The stone is set on sterling silver pattern shank. 
This stone matches a statement piece that I will be putting up in that section as soon as I get the pictures all done.  Soon, really.

Beautiful plume agates set in fine silver bezel settiing with hand twisted sterling silver wire around outside edge.  Handmade sterling silver ear wires.