Synthetic, Simulated, and Treated Gemstones
Cochise College      
Photos of Gemstones

Geology Home Page

Roger Weller, geology instructor

wellerr@cochise.edu
copyright 2018-R.Weller


polymer impregnated synthetic opal-11
 

synthetic                                                                                                                                               opals15    
Photo is copyright free for non-commercial educational uses. 
Just credit photo to R.Weller/Cochise College.