Crystal: Labradorite Chemical Composition: (Ca,Na)(Al(Al,Si)Si2,O8) Detail: Labradorite, a plagioclase feldspar can be highly iridescent, due to diffused light reflection from microscopic parallel intergrowths of Albite and Orthoclase bouncing light back and forth through the layers. Origin: Madagascar
Crystal: Labradorite Chemical Composition: (Ca,Na)(Al(Al,Si)Si2,O8) Detail: Labradorite, a plagioclase feldspar can be highly iridescent, due to diffused light reflection from microscopic parallel intergrowths of Albite and Orthoclase bouncing light back and forth through the layers. Origin: Madagascar