This bypass ring presents a stunning .75ct natural tanzanite. The brilliant round gem is securely housed in a six prong setting upon a sterling band. This particular tanzanite has not been heating, allowing a subtle color shift between purple, blue and even gold depending on the angle and type of light hitting the stone. This trait is known as pleochroism; because of this along with its general scarcity, makes tanzanite one of the most sought after gems in the world!