Incredible Kambaba Jasper with its black nebula swirls on olive green background comes from the Madagascar.
This pendant is combined with black onyx rounds, kambaba ovals and silver plate pewter beads. 
It doesn't show well here, but its carved leaf pattern is complete with leaf lines in crevices.
Apx.18 1/2" long (plus 2" extender chain) and 2 1/2 pendant.  $30