Photos of Opals
Cochise College    
Opal Cabochons  
Geology Home Page

Roger Weller, geology instructor

wellerr@cochise.edu     copyright 2011-R.Weller

 
Australian opal cabochon-3
 

opal                                                                                                                                                                                          13

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