blue dyed chalcedony
last edited: 11/15/17 number of photos: 4
Chalcedony is a cryptocrystalline form of quartz, SiO2.
The name chalcedony applies to all forms of agate, jasper, flint,
and chert, but is more recently used for white or light blue agate.
Mineral information on quartz
Chalcedony by Audrey LaClair
chalcedony cabochons-blue: A B C
Photos are copyright free for non-commercial educational uses.
Just credit photos to R.Weller/Cochise College.
west of Patagonia
south of the Superstition Mountains
Eldorado Mountains, 10 miles north of Searchlight (desert roses)