PEN-TOUPT-03 Origin: Brazil Grade: A Dimensions: Approximately 40mm x 25mm Weight: Approximately 15-20g Origin: Brazil Grade: A = good Oval drilled tourmaline approximately 40mm x 25mm Free waxed cotton cord Note: the presence of cracks or cavities on the tourmaline is a normal phenomenon. These are genuine tourmalines and not stabilized tourmalines. Black tourmaline is the most well-known variety of tourmaline. It is also identified under the name schorl. It is said to be black, but it can also be dark brown. It has gained its notoriety over time due to its many properties. So black tourmaline, schorl, is the most common tourmaline and can sometimes measure up to 2 meters high.