Roger Weller, geology instructor
email@example.com copyright 2012-R.Weller
Australian opalized shells, unpolished-4
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