Corundum Photos 
Cochise College               
Photos of Minerals
Virtual Geology Museum      Hall of Minerals

Geology Home Page

Roger Weller, geology instructor

wellerr@cochise.edu     copyright 2008-R.Weller 

 
corundum-ruby crystals-3
The red color in rubies comes from trace amounts of chromium as an impurity. 
Ruby crystals occur in hexagonal prisms which can either be long or short and
stubby.
 

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