Onyx (Calcite) Photos
Cochise College        
Photos of Gemstones  
Translucent Gemstones
Geology Home Page              

Roger Weller, geology instructor

wellerr@cochise.edu   copyright 2017 


onyx cabochon-A
 

calcite onyx                                                                                                                                       1847
Photo is copyright free for non-commercial educational uses. 
Just credit photo to R.Weller/Cochise College.