Tourmaline Bicolor 11,76 CT Rectangular 13.5x11.5

Bicolor tourmaline is a variety of tourmaline that displays two distinct colors in a single crystal. This phenomenon is known as pleochroism, which is the ability of a mineral to display different colors when viewed from different angles. In the case of bicolor tourmaline, the colors are usually distributed in distinct zones throughout the crystal, resulting in a stone with a gradual transition or clear division between the colors.

Bicolor tourmaline can display a variety of color combinations, such as green and pink, green and red, or any other possible combination within tourmaline's color range. Some notable pieces may exhibit a sharp, well-defined color change, while others may have a more subtle transition.