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

wellerr@cochise.edu      copyright 2008 
 

agatized coral cabochons-C

Any material that has been replaced by silica and has good color and pattern
can become a gemstone.  Here a colony coral has been replaced by silica and
colored by iron oxides.

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

Gemstones courtesy of Beauty and the Beads
Specializing in gemstone beads
Dennis and Deborah Lam
607 S. Hill St., Suite PL38, Los Angeles, CA 90014
(213) 239-8886-87
beautyandbeads1689@yahoo.com