Photos of Opals
Cochise College    
Opals- Rough Opal and Specimens
Virtual Geology Museum      Hall of Gemstones  
Geology Home Page

Roger Weller, geology instructor

wellerr@cochise.edu     copyright 2012-R.Weller
 

Australian boulder opal-polished-1
 

opal                                                                                                                                        boulder20
Photo is copyright free for non-commercial educational uses. 
Just credit photo to R.Weller/Cochise College

Specimen in memory of Ray Dunn