Roger Weller, geology instructor
[email protected] copyright 2010-R.Weller
blue topaz
crystal-1
Minas Gerais, Brazil
topaz
2469a
Photo is copyright free for
non-commercial educational uses.
Credit photo to R.Weller/Cochise College and Exhibit Museum.
Specimen on display at Exhibit
Museum, University of Michigan
Ann Arbor, Michigan