Rough tanzanite photographed deep underground at TanzaniteOne, illustrating "pleochrism": the unique ability to show separate blue and violet hues simultaneously.
Rough tanzanite photographed deep underground at TanzaniteOne, illustrating "pleochrism": the unique ability to show separate blue and violet hues simultaneously.
Rough tanzanite photographed deep underground at TanzaniteOne, illustrating "pleochrism": the unique ability to show separate blue and violet hues simultaneously.
