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

Roger Weller, geology instructor     copyright 2012-R.Weller

fire opal from Queensland, Australia-2
closer view

opal                                                                                                                                               2212

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

Specimen on display at Cranbrook Institute of Science, Bloomfield Hills, Michigan