Roger Weller, geology instructor
firstname.lastname@example.org copyright 2012-R.Weller
Australian opalized shells, unpolished-3
Photo is copyright free for non-commercial educational uses.
Just credit photo to R.Weller/Cochise College.
Opals courtesy of Opal Network
Specializing in precious opal and opal fossils
P.O. Box 1709, Lightning Ridge 2834 NSW, Australia