Photos of Opals
Cochise College    
Opals in Jewelry
Geology Home Page

Roger Weller, geology instructor

wellerr@cochise.edu     copyright 2017-R.Weller

 
black opal pendant-22
Lightning Ridge, Australia

 

opal                                                                                                                                     blackopal1

Photo is copyright free for non-commercial educational uses. 
Just credit photo to R.Weller/Cochise College.