Roger Weller, geology instructor
[email protected] copyright 2011-R.Weller
citrine geodes from
Brazil-2
At the 2008 Tucson Gem and Mineral Shows
Citrine was produced by heat treating
amethyst.
quartz-citrine
5441
Photo is copyright free for
non-commercial educational uses.
Just credit photo to R.Weller/Cochise College.
Specimen courtesy of
Bevipe Stones
Fernando Beneduzzi
Av. Julio De Castilhos, 3447, Soledade-RS-Brazil
CEP 99300-000-Caixa Postal 29
55-54 3381-5431
[email protected]
[email protected]