Description: An astounding 4.52ct Custom Cushion Cut Green Tourmaline. This tourmaline's dimensions are 11.25 x 9.46 x 5.71 mm.
The color of a tourmaline can be caused by varying factors. Some of which include elements and radiation exposure.
Tourmalines are pyroelectric gemstones. This means that "Tourmaline becomes electrically charged when heated. Also when squeezed; it's piezoelectric too" (gia.edu).