I love this peice! It is Ocean Jasper and it is clear on the bottom so I cut our the silver so the light could show through. The large green faceted cabochon is a chrysocolla that matches the green in the stone perfectly! I bought them together when I shopped in Tuscon last year. The pendant is 11/2 x 2″ . the chain is a simple open link sterling silver chain that measures 18″. 15-19, $255.