"Don't The Nights Pass Slow"
These are deep, dark blue Egyptian Turquoise specimens with lovely chocolate matrix.  Their high polish makes them difficult to photograph - pictures don't do them justice!  Stones are set in fine and sterling silver with a double rope sterling border.  Oxidized and tumbled for a dark satin finish.
Earrings measure approximately 13mm round. 
Sterling silver posts with large butterfly backs (not pictured).