It takes but a moment to realize that you are looking into a superior tourmaline with this oval. It is on the darker toned side, but has an open face with a great blue saturation in natural light. The gemstone does easily slip into a great blue green presentation when put in yellowish light. It is eye clean and with great crystal. It has to be from Namibia. It weighs a hefty weight of 3.12 carats for this quality of tourmaline.