Ruby Photos                        
Cochise College                                                           
Photos of Gemstones
Transparent Gemstones
Geology Home Page
Roger Weller, geology instructor               


last edited:  2/23/18    number of photos:  29
Ruby is red-colored corundum, Al2O3                          
The red color comes from the presence of chromium.
corundum as a mineral


lectures on rubies
Rubies- Michelle Cruz 
Rubies- Shawn Kellerman

faceted rubies

ruby, faceted:  A  B  C  D  E F G H I J*

ruby, faceted-lab created:  A


rubies in jewelry
ruby, beads:  A  B  C  D  E                                                       

ruby, ring:  A  B  C  D  E  F  G                                                                                                                                           
ruby earrings:  A    

rubies, uncut
ruby, crystals:  A  B  C  D  E


Photos are copyright free for non-commercial educational uses. 
Just credit photos to R.Weller/Cochise College.
copyright 2018-R.Weller