Photos of Opals
Cochise College    
Opals- Rough Opal and Specimens
Geology Home Page

Roger Weller, geology instructor

wellerr@cochise.edu     copyright 2011-R.Weller

 
common opal-11

 

opal                                                                                                                                                                                  1623
Photo is copyright free for non-commercial educational uses. 
Just credit photo to R.Weller/Cochise College.