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
Rubies- Michelle Cruz
Rubies- Shawn Kellerman
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 earrings: A
ruby, crystals: A B C D E
Photos are copyright free for
non-commercial educational uses.
Just credit photos to R.Weller/Cochise College.