   Agate Photos
Cochise College
Photos of Gemstones      Translucent Gemstones
Virtual Geology Museum       Hall of Rocks
Geology Home Page
Roger Weller, geology instructor

Brazilian agate-A
Close up view showing colloidal particles within the banding.

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

Agate courtesy of Sheila Demeritt