Photos of OpalsCochise College
Opals in Jewelry
Virtual Geology Museum Hall of Gemstones
Geology Home Page
Photos of OpalsRoger Weller, geology instructor
wellerr@cochise.edu copyright 2008-R.Weller
black opal pendant-22
Lightning Ridge, Australia
Photo is copyright free for non-commercial educational
uses.
Just credit photo to R.Weller/Cochise College.