This is the rainbow iridescent variety of goethite from Spain. Goethite is an iron oxide. The look of this type of goethite is so beautiful and fascinating with the oil slick rainbow colors and the botryoidal nature of it that is accented by the almost metallic iridescent sheen it has.
Origin :: Tharsis, Spain
Measurements :: 69 x 50 x 24 mm
Weight :: 3 oz
